Why is my cat suddenly attacking my other cat?

Cats can attack if they feel stressed

Felines have a much more developed sense of smell than ours, to the point that they can feel the smell that other animals have and know, just for that, if they are part of their group of trusted beings or not. It is a very reliable and efficient system that avoids many problems, but sometimes it works too well and it can confuse you.

This is what happens when we take one of our furry animals to an unknown place for a few hours or days, and then we take him home again. What happen? What my cat attacks my other cat, suddenly. They may already be brothers or have grown up together, but it often happens that, without further ado, one of the two rejects the other. Why? Let's find out.

The first time I had one of my cats sterilized, I couldn't even imagine how his sister would behave afterward. He went home and immediately began to snort at him, as if he didn't know him at all. The truth was, they were quite unpleasant moments, very uncomfortable and even sad, because until that day they had been very close. If that is what has happened to you, in principle you do not have to worry, since it is something normal and has a solution.

The cause of this sudden change in attitude of the cat that has been at home is the smells "brought" by the cat that has been outside. That is what our furry beloved dislikes so much that he has not come out.

To do? There is no choice but to present them, as if they did not know each other at all. To do this, you have to take the cat that has been outside to a room, with a bed, the feeder and drinker, and a litter box. For 2 to 3 days, the beds will be exchanged so that they accept each other's scent, and they will be given prizes every time they approach or smell it.

On the fourth day, you can let them see each other, for example through a glass. If there are no grunts or snorts, they can be put together. But, yes, if you see that one of the two is nervous, that is, that he puts his ears back, growls, snorts or tries to scratch the other, keep him in a room for a couple of days, and try again after that. weather. You can even buy a diffuser of Feliway and put it in the area where cats make more life.

Anyway, if after two weeks you do not notice improvement, do not hesitate to ask a feline ethologist for help.

More causes of seizures between cats

Sometimes cats fight

Animals don't do things for no reason, and cats are no exception. If your feline friend suddenly turns into a hissing, scratching, and growling broiler, there is a reason for this change in behavior.

Aggression is defined as the intention to intimidate or dominate, and is a common feline behavior problem. Unfortunately, an aggressive cat is at risk of being turned over to a shelter or abandoned by a frustrated owner.

It certainly can be confusing when a cat suddenly infuriates people who love him. However, there is always a reason and the challenge is to find out what bothers the cat. Read on to learn why a normally docile cat might suddenly become aggressive and what you can do to help an angry kitten.

Fear / stress

While cats are generally loners, they are also sociable and capable of forming close bonds with the people they love. However, a cat can become aggressive if it feels threatened, instinctively lashing out to protect himself. For rescued cats, what triggers an aggressive reaction could be related to a bad experience like fighting in the street, or adjusting to life in a shelter. You may not fully understand what is causing the fear or stress. Your cat could also be reacting to other household pets or even an atmosphere where people don't get along and are fighting.

Some of the most common causes of fear or stress in a cat's life include new pets in the home, too many pets in the home, sudden moves, sneaking up on them, loud noises, harsh treatment or unfair punishment, being put in a cat carrier, riding in a vehicle, lack of resources (food, water, toys, scratching post), a change in routine or no routine at all.


Anytime a kind and gentle kitty shows aggression, it's time to visit the vet. Cats are stoic and try to hide pain or illness. A feline could be showing aggression to protect an injury or avoid touching a sensitive area.

Common causes of pain include dental disease, abdominal pain, arthritis, soft tissue injuries, or infections. Sudden aggression can also be caused by neurological problems, cognitive decline, and loss of smell, hearing, or vision.

Stroke-induced aggression

This is a type of confusing aggression that occurs when you calmly pet your cat and it suddenly turns towards you, grabbing your hand with its front claws while trying to rip your skin apart with its rear claws and teeth.

It can happen if your cat becomes overstimulated and the pleasant sensation of being petted turns into irritation. It may seem like it came out of nowhere for no reason, but your cat was actually giving you signals that it wanted the petting session to end, such as backward ears, dilated pupils, body stiffness, growls, and wagging tail. When you do not notice the signals and continue with the strokes, attacking is the cat's last resort to stop you.

Territorial issues

Cats are not afraid to use aggression to protect their territory. Looking out the window and seeing another cat walking outside could trigger the aggression. Other possible triggers are the addition of a new cat or dog to the home, an unknown person in the home, or a move. Sometimes a cat becomes territorial when you pay attention to another pet in the house and will suddenly attack you or the other pet.

Redirected Frustration / Aggression

Redirected aggression is one of the most common and unpredictable causes of sudden hostility in cats. This is when a kitten becomes hyperaroused, irritated, or stressed by a stimulus that is out of her reach.

These are just a few of the reasons a happy kitty can suddenly become aggressive. The first thing to do is schedule a medical follow-up with your vet to make sure there is no medical reason for the aggressive behavior. If none are found, the next step is to speak with an animal behavior specialist who can help you get to the bottom of your kitten's aggression ... or start by following the advice we give you below.

How to solve the problem of the attack between cats

If your cat attacks another you have to find the reason

There are many possible reasons why your cat could be attacking your other cat, including lack of space, social maturity, a medical problem, or environmental changes. Fortunately, generally solutions can be found that allow cats to continue living together and overcome their aggression.

Since you can't just ask your cats what's wrong with each other, identifying the reason for the aggression will generally be a process of elimination that involves simply trying various solutions.

Keep in mind that if the behavior started after the cats have been together for a while, a medical problem may be the culprit. When a cat is in pain or uncomfortable, it may show signs of aggression, even if it is typically docile. Once medical issues have been ruled out, there are other things to try to reduce cat-to-cat aggression.

Let the cats have their space

Cats like to have their own space and can be quite territorial. Having to share a small space, food bowls, and litter boxes is a common reason for aggression. While you may not be able to expand your home, you can add space for cats by providing additional perches, cat condos or even invest in an outdoor cat enclosure that allows cats to safely spend time outdoors.

Also, place food and water bowls and litter boxes (one litter box per cat plus one extra litter box works best!) For each pet, so the cats don't have to share. You can buy the new material that you need this link.

Provides an escape that cats like

If a cat tends to be passive, install a collar or latch controlled cat door that leads to a quiet room. Just put the collar on the cat that is bullied or allows the passive cat to enter. Leave the other one out. This will allow you to escape from the aggressor and give the stalking cat a cooling off period..


Many cat owners have had great success using pheromones to prevent one cat from attacking the other cat. These products, which come in spray and diffuser form, calm cats and are, in some cases, a very effective way to eliminate fighting. You just have to ask your vet what type of product is best for you to use.

Wait time

Cat fights can be avoided

Does absence make love grow? Maybe not, but it will give you a chance to reintroduce cats properly and slowly. Wait for the cats to recognize your scent before putting them together in the same room. This way they will be calmer when they get together and will not feel like they are a threat..

If the above methods are unsuccessful, seek the help of an animal behavior specialist. The good news is that, in most cases, with time and patience, the problem can be solved to the point that cats will be able to live together in peace, even if they are not the best of friends.

Good luck.

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  1.   orosmann said

    Hello, I comment that my cat is neutered, 4 days ago she suffered inside the house a persecution of the dog that I have in a kennel and it escaped luckily I did not reach her, but 3 days ago she took refuge in a small barn and does not come out at all the day, at night I go to look for her and I bring her home, please, in this case what can I do? Thank you

    1.    Monica sanchez said

      Hello orosman.
      My advice is to be patient. Your cat may no longer feel safe at home because of what happened to her.
      Give him lots of signs of affection and trust, and the occasional can for cats (inside the house).
      Little by little the fear will be removed.
      Cheer up.

      1.    Cintia said

        Hello, good morning, I have 6 cats at home and there are two that when we came back from vacation, the cat can't stand a cat and won't let it enter the house, it's always pending and when it sees it, it attacks it.
        I would like to know what I can do.
        Thank you .

        1.    Monica sanchez said

          Hi Cintia.
          Feed them all at the same time, and give them the same love too.

          Play with them, with everyone, on a daily basis, and you will see how little by little you will regain peace of mind.


      2.    Karla Jael said

        My cat has just given birth, however she has shown violence towards one of her older children, I am not sure if she relates it to the father of her recent kitten, but she beats him very happily and the other older cat does not.
        What I can do? I am afraid that my cat will leave the house because of his mother's aggression

        1.    Monica sanchez said

          Hello Karla.
          It may be that what you are trying to do is get him away from her. Perhaps the cat has reached sexual maturity (is she six months or more?) And wants to mate with her mother, because she no longer sees her as a mother-cat, but as an animal-cat.

          Therefore, my advice is that you take him to be castrated. This will calm him down and leave the mother alone in the process.


    2.    Katherine said

      Hello, my cat is 9 years old and is neutered and I have an 11-month-old kitten and she is sterilized, until a week ago they got along relatively well they played and were together although sometimes the older cat would growl at her, but now she can't stand her, she doesn't want to be cross over, pay him and growl at him. The kitten starts out and no longer sleeps with us. It will not be that all this began since there was a cat outside and now it escapes into a big cat and growls at us until we do not let one take it ... I do not know what to do they were advancing and suddenly all this happens. I really appreciate if you help me

      1.    Monica sanchez said

        Hi Katherine.

        I recommend you have a lot of patience. Go about your daily routine, and pay equal attention to both cats. Play with them, especially the little one, and give them treats from time to time (cat treats).

        From my own experience, the more importance is given to this type of problems between cats, the more it costs to have a calm coexistence again.
        Be careful, I am not saying that you have to ignore it, but that it is better that, be patient, and give them the same affection.

        Greetings and encouragement.

  2.   Jeniree said

    Ahh what a relief to find this report. I took my cat to the vet and when her sister came back she behaved just as you describe. My poor cat is very confused, he approaches her to be with her and she rejects him horrible = (I already know how to treat them until it happens to the other cat. Thank you!

    1.    Monica sanchez said

      I'm glad the article serves you. 🙂

      1.    Victoria said

        Hi! The article helped me a lot to understand the situation between my cats.
        It turns out they are a female and a 2-year-old male, both neutered. They had a beautiful relationship, they slept together 'cuddled', groomed each other and played constantly.
        The cat disappeared for two days and now the cat when he sniffs her he hisses and hits her.
        Besides the recommendations you gave in the post, what else could I do to improve the situation?
        Thank you!

        1.    Monica sanchez said

          Hello Victoria.

          What needs to be done more is… be patient.

          Give both of you a lot of love equally, and wait.

          Cheer up!

  3.   Giuliana of Assisi said

    Hello, good day, this happens to me, yesterday my cat disappeared for a long time, he is 6 months old and when he appeared it was seen that he was sleeping on top of the roof and nothing was seen because there were the irons that belong to my neighbors !!! Well the point is that when he appeared he went to bed very calmly and from there he did not go out all day, he slept a lot and at night I already realized how much something was not right, his little brother and his mother hiss (aggggggagggggg) that They make a sound and they throw it out, they don't want him near them, and he was very down at night, and today he woke up better but the cats keep doing the same thing, they don't want him near them, as they reject him so much that Abel my kitten He slept with me very cuddly and the other two did not appear all night to bed, since Milo and Nina the mother live close to me sleeping every day !!!!

    1.    Monica sanchez said

      Hi Giuliana.
      Are they neutered? A six-month-old cat is already of reproductive age, so the mother often rejects it.
      My advice is to cast it to avoid unwanted litters and, incidentally, to prevent it from getting lost.
      A greeting.

      1.    Giuliana of Assisi said

        Sisis both are neutered, the mother and the little brother smell it and attack it as if it were a stranger and the kitten is very sad because he was always very cuddly and always very close with his mother and brother. They told me that it could be that he has been with other cats or that a cat has urinated him but the truth is Nose !!! He is now in perfect health but I do see him sad because he wants to play with them and they reject him all the time !!!! And the truth is that makes me sick.

        1.    Monica sanchez said

          Hi Giuliana.
          Try running a wet animal wipe over it, as if you were trying to wash it (do not use the one for human babies, as it will cause skin irritation). This way, it will smell different but not so strange and perhaps other cats will not find it so strange.
          However, it may also be that the mother no longer wants to take care of him. If this is so, I would recommend spending time with them, with everyone. Playing with them, occasionally bringing them cans of wet cat food, pampering all of them more or less at the same time… That way they are likely to be accepted again.
          A greeting.

          1.    ivana said

            hello I adopted a stray kitten and joined my six cats, mom and litter. They adapted very well and are now all neutered. Recently they began to reject the new kitten, after 2 years without problems, also they do not go outside the house, we have a large fence and they do not go out. Suddenly she hides and two of her adoptive brothers scratch her, I don't know what to do

          2.    Monica sanchez said

            Hi Ivana.
            I recommend you present them again, as if they did not know each other. Take the new cat to a room, with her feeder, drinking bowl, litter box and her bed, and for three days she swaps everyone's beds.

            Thus little by little they will accept, again, the body odor of others. After three days, set her free, and be attentive to the movements that everyone makes.

            When you caress one, caress the others. Feed them all at once, and pay equal attention to them.

            Little by little they will be accepted again.

            Greetings and encouragement.

          3.    Sofia said

            Greetings! I consult because I have had a cat for 4 years. He suffered an accident so on humid days he gets grumpy if someone gets too close to him and snorts. Besides I have a cat for a year that is neutered. They got along well and everything. But today, my biggest cat attacked the youngest out of nowhere. And it wasn't a game, I seemed to be getting married and I even feared something fatal. I don't know what to do with them. They are both outside cats and they choose whether to sleep inside or not. So now I do not want the young man to leave but there is no way, he escapes.

          4.    Monica sanchez said

            Hello Sofia.
            If it was only that one time, don't worry. Something may have scared or made the older cat uncomfortable, and that is why he reacted that way.

            My advice is to be patient. Give the same affection to both of them, and make the same case to them. It is also highly recommended to castrate the youngest, as that would help calm the nerves.

            Greetings and happy new year.

  4.   Andrea said

    I have 8 cats and there is a cat that is not mine but it comes almost every so often and attacks my cats and attacks them I have to scare it because otherwise I feel that I would be able to kill them this cat is male and it is an angora it is not the first time always I have had cats and there was a time when I had the same problem with a black cat that attacked my cats. I am worried, please, I don't know what to do with this cat.

    1.    Monica sanchez said

      Hello Andrea.
      In these situations what can be done is to scare the cat, and put repellents through the area where it usually enters.
      If you have a family, talk to them to see if they can have it more under control.
      A greeting.

  5.   Priscila said

    Hello, I have 4 cats, my mother and the others are her children! The oldest cat has already had 3 pregnancies! Only one cat survived the first pregnancy! The second pregnancy was because it came out and I didn't realize it! But now her first child is pregnant! Sure already had the kittens are two weeks old! Well, the fact is that I took her first child to crater him and she was absent one day upon her return, the cat is very aggressive and attacks the cat and also her other children! I do not know if it is because he is on the defensive of his new hatchlings! But I'm desperate, I don't know what to do!

    1.    Monica sanchez said

      Hello Priscila.
      Yes, you are probably trying to protect your new hatchlings.
      You can help her by taking her (her and her little ones) to a separate room, where the other cats cannot disturb her.
      In this way, potential fights will be avoided.
      While the kittens are there, you can take an older kitten from time to time, but always one at a time, so that the mother does not feel nervous.
      A greeting.

  6.   Susana said

    Hello Monica,
    I have two British cats a two and a half year old female, black and a one year blue cat. I caught them as babies, the two get along great, they play, they eat everything in the same great place.
    The problem comes now a month ago a friend of mine called me saying that she cannot have the cat because of problems that she has been at home for a year with the Maicon cat fights with the British that every time they see each other they fight to the death, and I did not want to have him locked up in a room so I brought him home, a beautiful British 2 and a half years old, very good, very noble is a pass of cat of how affectionate he is.
    The fact is that when I got home the presentations were made in the carrier they were seen little by little and well there were only snorts.
    the 3 cats are neutered, the bold one for 2 years, the blue one for a month and something and the new one for a month.
    The three of them can be together in the same room but the one of the year (Zeus) every time the new one (César) is going to close in on him he starts to snort, growl, cry, and even scream without doing anything to him, Cesar the new one leaves , He passes by rolls, but he arrives at a time when he gets tired and Cesar goes for him, it is not that he fights but he is going to tell him shut up that I am not going to do anything, because Zeus every time gets more hysterical and so we carry Almost a month and something, the little one is so calm and nothing more than is looking at what he does where he is going, what he is going to do and then he approaches him and forms some that seem to be killing him. I no longer know what to do I have put the feliwey friendes, diffuser and nothing, another calming diffuser and nothing I give the calmex and nothing now I will try with a relaxing necklace at least that the little one relaxes, I have really tried of everything and there is no way for them to approach and this without snorting, without crying etc ...
    My question is what can I do? will they ever become friends? Can the little one get sick?
    I have been to the vet and no patience but I see that every day they are getting more. It is a somewhat stressful situation to be at home like this with the two males, the cat when she sees the new one she snorts at him but it goes through fights. Let's see if you can give me some advice.
    Thank you.

    1.    Monica sanchez said

      Hi Susan.
      Sometimes it happens that from one day to the next they start to get along for no apparent reason. The feliway in diffuser will help, but you have to have it at least a month for it to take effect.
      To make them more calm, you can try with these natural painkillers.
      But the most important thing is to be patient, play with them at the same time, give them affection at the same time, give them cans from time to time, and spend time with them.
      Greetings and encouragement.

      1.    Susana said

        Thank you very much Monica for answering, I will start with a mild relaxant, to calm the little one because I see him very stressed.
        I will tell you.

        1.    Monica sanchez said

          Hi Susan.
          Let's see how it goes 🙂.
          Cheer up.

  7.   Tony said

    Hello. I have 2 sterilized cats from 3 years ago living on the terrace (they never escape). They get along well and fight from time to time -to play- but a few days ago one of them (the skinniest) had wounds on his head and I began to think that the other no longer bit him so jokingly ...
    What can I do to prevent the chubby cat from biting and bruising my skinniest cat?

    1.    Monica sanchez said

      Hi, Tony.
      You are from Spain, right? This being the case, you can try with Feliway, which is a very effective product and recommended to calm cats. It is sold in a diffuser and in spray.
      You can also look at giving both of them wet food (cans) at the same time, and playing with them.
      Little by little you should see changes.
      A greeting.

  8.   Clara said

    Hello! As a result of this post, I want to tell you about my situation, since I am worried. I have two kittens (sisters of litter and coexistence) of 6 months and today we have taken them on vacation to a house in the town. New house, new smells ... we have let them rush exploring, and when they went out to the patio they were very frightened by a noise. Since that has happened, one of them (the largest) will not stop hissing at the other and growling when he sees her. So far he has not made any attempt to attack her, but I am very sorry for the situation and I would like to do something to improve it if possible.
    Many thanks!!!

    1.    Monica sanchez said

      Hi Clara.
      Do not worry. It will pass 🙂.
      The family have to pretend nothing had happened. So the cats will see that, indeed, everything is fine.
      If you see that it is necessary, that is, if they are very nervous, I recommend the Feliway in diffuser. It will help them to be calmer.
      Play with them at the same time, and give them prizes (cans for cats, for example). They will love it and little by little they will forget what happened.
      A greeting.

      1.    Clara said

        Thank you very much, we did that and indeed they ended up calming down 🙂
        Thanks again!

        1.    Monica sanchez said

          To you 🙂

  9.   Gab said

    Hello. I brought a very malnourished cat and when he was well I joined him with the others. There was one he got along with from the start, until one day I saw that they weren't fighting and the one I brought meowed and the other had his paw hooked on the cat I brought. Hence I do not know why it is like the one who trake became obsessed and began to meow and provoke him until he attacked him and today he continues with that obsession and attacks him all the time. Find where he is to attack him. To top it off, the one he attacks is an old man, he is 13 years old.
    When I go to work I leave it in a garage and when I arrive I upload it with me. I have no way of putting them together.

    1.    Monica sanchez said

      Hi Gab.
      You must present them little by little. Cover their beds with a blanket or sheet, and keep them apart for three to four days. From the second, exchange the blankets / sheets so that they get used to the smell of the other.
      On the fourth day, bring them together but do not separate from them. See how they react. If they snort, it is normal, but if after a while they are ignored, everything will be fine.
      Much encouragement.

  10.   Ruth said


    I have a cat and a cat for 5 years, they are brothers and I adopted them at the same time. They have been huffing at least once a day for a year, apparently this has caused stress to the female and she does not stop licking herself, leaving her legs completely hairless and with the skin raised from so much licking. I have taken them to four vets, they are healthy, they have done everything, I have given them feliway and has even been on a medication for depression and nothing, is to stop or lower the dose and start licking. I honestly don't know what to do, I've taken her to so many places and no solution that is lasting that I'm desperate. Thanks

    1.    Monica sanchez said

      Hello Ruth.
      Are they neutered? Has there been an important change in your life (move, a new member in the family,…? Perhaps what both of you need is to spend more time together with you.
      In any case, I would recommend you ask for help from an ethologist or feline therapist who works positively. Surely he can help you.
      A greeting.

  11.   Jose Maria said

    Hello. I have two sterilized male cats that are 4 XNUMX/XNUMX years old. They have practically grown up together and have always gotten along well, but for a few days they have been fighting continuously and snorts, ruffled tails and screams have not stopped happening, and it is sad and unpleasant to see how two cats that have been practically brothers have that behavior. As causes I think there may be several but I would like you to tell me which one you think could be the most problem. One possible cause is that until recently the dominant male was always the oldest (they are a month apart), but until recently the minor has gained weight and corpulence and is now larger than the oldest and may be giving a change of role of dominant male. Another possible cause could be an odor issue; A week ago we changed the type of sand (from silica pearls to binder) and also my wife is going to feed colonies of stray cats as a volunteer and this last week she has spent more time than usual there. I would like you to comment on what you think is the most likely cause of this behavior. Thank you.

    1.    Monica sanchez said

      Hello José Mº.
      I am almost convinced that the causes are the two that count. The cat that was "weaker" physically is no longer so, and so he takes advantage of it to confront his partner, because he knows that now he can. The fact that your wife has brought new smells has surely made both cats quite uncomfortable, since they are smells of other felines, strangers and they may even feel that they are threatening.

      To do? Well, you have to be very patient. I've been through that myself and in the end what has given me the best result is, as soon as I got home, with the smells of other cats, running my hand over the sweater and pants (that's how the hand gets impregnated with that smell) and immediately after for my cats. It may seem silly, but it works. Of course, you will not notice improvements the first day, but with time you will.

      Also, I would recommend you to be aware of the two cats, something more than usual. Do the same to them, play with them at the same time, give them wet cat food (cans), ... Little by little you will see how their behavior improves.

      A greeting.

    2.    guisel said

      Hello, please, I need help, I have a 4-year-old cat and a 2-year-old cat, the problem started a few days ago ... My cat came only two weeks old, so all her life she has been with my cat, there has never been a problem, even her she treated my cat like her mother ... They slept together all together but one day we were on the couch and they started fighting and from that moment the problems started where she sees him and attacks him or just by seeing him she growls at him but he never does nothing stays calm what should I do? Please help!

      1.    Monica sanchez said

        Hi Guisel.
        I recommend keeping them apart for a few days. During that time, they swap their beds. When you caress one, and without washing your hands, immediately caress the other. Thus, little by little, they will get used to the smell of the other.

        When about 3-4 days have passed, let them be free around the house again. Spend the same time, both playing games and pampering.

        Be patient. Little by little you will see results.


  12.   Jose Maria said

    Hello Monica.

    We have had both cats separated for a few days, using the new cat introduction procedure. In the meantime we have had two Feliway posts (one in each unit). We spoke with the vet and he told us that, after three days, we should put them back together; only when we were in front. Yesterday we put them together again. But definitely, the older cat does not accept the other. He huffs at him, growls at him, follows him where he is and tries to corner him. This morning they attacked each other and my girl was in the middle (who didn't even try to separate them) and one of them gave her a deep blow.
    We do not know what to do. It is a very tough process. They have grown up as brothers, they have always gotten along well, and from one day to the next they cannot be tolerated. It's frustrating and I don't know what to do. My main theory is that at some point the younger cat has hurt the older one and caused him some kind of trauma and now he associates the younger cat with harm or danger and is threatened by being around him. We're going to try calling a feline ethologist this week. I am quite desperate. Any advice or help is welcome. Thanks.

    1.    Monica sanchez said

      Hello José Mª.
      I'm sorry that the situation is not improving 🙁
      Sometimes you have to be very patient, much more than usual, with cats.
      As advice that I am convinced that it can be useful is to caress one and immediately the other. Having the same body odor will help you feel better.
      In any case, I recommend you consult with Laura Trillo Carmona, whose website is therapyfelina.com She is a feline therapist, and responds to online consultations, in addition to doing courses and conferences.
      Hopefully your cats get along again soon.
      Much encouragement.

  13.   Nancy said

    I have 3 female cats, one is pregnant for a while now, one attacks the pregnant woman a lot, what can I do? I do not want them to hurt

    1.    Monica sanchez said

      Hello Nancy.
      In these cases, you can try to get along with prizes, cat treats, and lots of love; But if you are worried that they might hurt her, it is best to keep them a little apart, at least in your absence.
      It can also help castrate to those who are not to calm down.
      A greeting.

  14.   Presented said

    I just castrated my two cats who are about 7 months old and they got along super well but after the operation one attacks the other and the other hides and I don't know why, I don't know what to do

    1.    Monica sanchez said

      Hi Suna.
      It's all a matter of smells 🙂. Cats that have been to the vet pick up the smells of the clinic or hospital where they have been. Especially if they have been intervened, when they get home the other cats may reject them, as they have lost their own body odor.

      What to do in these cases? Well, do the presentations again. Keep the calmest cat in a room for 3 days. During the second and third, he swaps their beds. From the fourth, let it out. Don't leave them alone. Observe how they react and if they intend to attack (that is, they snort, kick, and their hair stands on end) make a loud noise like slapping the air to distract them. Feed them wet food and give them both lots of love.

      With time and patience they will calm down.

      A greeting.

  15.   inma said

    Hello!!! I just sterilized my second cat and now she won't stop snorting at the other cat, she won't even let me touch her sister, she becomes very aggressive, is it normal? Before they loved each other, but now they can't see each other.

    1.    Monica sanchez said

      Hi Inma.
      Yes it's normal. The operated cat "brings" with it smells from the vet clinic. Smells that the other cat does not like at all and makes her distrust.
      It is best to keep the operated cat in a room until she recovers.
      All the best

  16.   Margherita said

    Hi, I'm Margarita, I just read this post, very interesting, Monica I want to consult you, I have 2 male cats, sterilized, they are brothers, I adopted them together, they are 2 and a half years old, they got along super well, they licked, played, slept together, everything was peace and love, until last December we had the idea of ​​hiring a babysitter to clean their sand and give them food, we had already left them alone and my brother was going to take care of them and nothing happened, but Last month we hired this babysitter, we don't know what happened and for the first time in their life they fought very hard, after that, we have noticed that one of the two is the dominant one and the one who faces his brother, coincidentally when someone approaches greet him, even me, yesterday I arrived at the apt, I greeted them, first to the one who is dominant and then to the other and there is the same one faced him and they fought ... the one who is attacked urinates and runs away, he is very fearful, when that happens we separate them and we left one on the balcony and another in the apartment and they are seen through the glass, which we leave open to smell, after 10 minutes the attacker calms down, talks to the other through the glass and lies on his back, we let them gather, he they smell, but they are stressed and the attacked very fearful, I do not know this because it could have happened, they already have 4 strong fights and I do not dare to greet the submissive so that his brother does not attack him, they loved each other, tell me what could have happened and what can be done to avoid those fights please. We realize that while they are alone nothing happens, it is only when visitors go or when I approach them and caress them, please help me to stop this that has me very anguished, thank you. I do not know when they are going to fight, it is unpredictable and before they were super sociable with all the visitors.

    1.    Monica sanchez said

      Hi Margie or Hello Margarite.
      It is very strange what has happened. What is clear is that something must have happened to them when the babysitter was going. The fact that? I do not know.
      I recommend you to caress them both a lot. First to one, and immediately after to the other. Cats are very much guided by smells: if their body odor is "mixed" with that of their brother, little by little they will be accepted. You can also give cat cans (wet food) to both of you at the same time so that you can become friends again.
      Still, you must be patient. It may take several days or weeks for everything to return to normal.
      Much encouragement.

    2.    Rose said

      I have two cats, we brought the smallest one home (she is 7 months old, at that time she was 4 months old) and they got along well for the first few weeks but from one moment to another the big cat always attacks her, they eat together but they cannot be together because he always attacks her and chases her around the house, they have to be separated.

      1.    Monica sanchez said

        Hello rosa.
        Are they neutered? If they are not, I recommend you take them to be cast (that is, to have their ovaries removed) since after this operation the cats tend to become calmer.

        Another thing you can do is introduce them again, as if they didn't know each other. Put the little girl in a room, and exchange the beds for three days. On the fourth day let them sniff each other, and if you see that the situation becomes tense, with snorts, growls, etc., put the kitten back in a room.

        It is important that, whenever you can, you caress one cat and immediately afterwards the other, because in this way you impregnate the scent of one to the other. This seems silly, but cats are guided a lot by smell, and if they detect that they smell a little like the other, as soon as they are in front of them they will less want to fight with them.

        And a lot of patience. If you see that things are not improving, I recommend consulting with a feline therapist or cat educator who works positively.

        Cheer up.

  17.   Ivanna said

    Hello!!! Two days ago I adopted a 2-month-old kitten and today I adopted another 4-month-old! This one who came today snorts and pulls her ears back with the intention that it comes out near her. The truth is, I do not understand her behavior if you can help me, thank you !!!!

    1.    Monica sanchez said

      Hi Ivanna.
      I recommend you follow the advice of this article.
      a greeting

  18.   yesenia said

    Hello, I have two male cats, one a year two months old and the other one year old, they are not brothers but they grew up together, before they loved each other, they slept together, washed and played, then they began to fight a lot for which we castrated them both, But the fights continue, they jump to attack the other directly to the neck and I don't know what to do with them so that they get along again, they usually fight when I am present, because when they are alone or with other people they do not even look at each other.

    1.    Monica sanchez said

      Hi Yesenia.
      Try giving love and rewards to both of you at the same time.
      Doing the same to them will help them get along better, but you have to be patient.
      If things do not improve, I would recommend consulting with a feline ethologist.
      A greeting.

  19.   Linen said

    I have two cats 9 and 8 years old. A few days ago the oldest underwent surgery, and when he returned from the vet, although we have tried to keep them separate and reintroduce them little by little, the cat does not stop hissing at him. He has gone downhill, but today, after having been together, playing, and having endured his licks, he suddenly attacked him, chased him and tried to bite and almost bite me too when trying to separate them. We have a house full of Feliway, we spray him, we exchange blankets between them so they get used to the smell ... but there is no way. What I can do?

    1.    Monica sanchez said

      Hello lin.
      You have to be patient. Giving them the same affection - both at the same time -, cans of wet food, and playing with them can help them a lot to get along again.
      Anyway, if you see that a month or so goes by and you do not see any change, or if, on the contrary, the situation worsens, I recommend consulting with a feline therapist, such as Laura Trillo (from therapyfelina.com).
      A greeting.

  20.   Karen said

    Hello, I have 4 cats. Two are female and two are male, but they are already spayed. I recently moved and took my cats to my new house… The thing is, the first days the cats were normal and suddenly from one day to the next one of the cats started rejecting the other cats. I don't know what to do and I'm afraid that I might hurt my other cats. I need help. Please!

    1.    Monica sanchez said

      Hello Karen.
      I recommend spending as much time as you can with them. Play with them, pamper them.
      If you can, try to get Feliway or another cat relaxer spray or diffuser.
      And patience. Little by little they will get used to it 🙂
      A greeting.

  21.   Gabriela Mende said

    Hi! I have a 5 year old cat, who is quite large in size, and he has lived alone with me since I adopted him. The point is that this week I brought a kitten (they are both neutered), and she is the sweetest thing you can ask for, much more than he is; The point is that she is much smaller in size, and she lives snorting at him, and hides, I think she is afraid of him, he has his presence and also surely marks territory as well.
    I have kept her in a room for 1 week and I take her out and the two of them stay close to me, and then I take her back to the room. But today at one point I called her who was hiding to grab her, and he jumped on her, and ran her into a room and they were pure loud growls and fight, and I was very scared, it is the 1st time I see my cat act like that, I thought I was going to hurt her all.
    I no longer dare to take her out of the room. I am afraid they will get hurt. I am desperate and this situation is very frustrating !!! What I do? I am very sad that she has to stay alone in the room most of the day. How much more time does it take for them to adjust?

    1.    Monica sanchez said

      Hello Gabriela.
      The rhythm is set by them. It is impossible to know when they will begin to be tolerated.
      I would recommend using the Bach Flowers, specifically the Rescue Remedy (they sell it in herbal stores). 10 drops in the cat's food, every day. This will help him to gradually feel better with the kitten.

      Take her out of the room 30 minutes after the cat has eaten, and keep an eye on them. If you see that they snort it is normal, or even that they "kick" each other.
      You also have to be calm, because they notice it.

      If you see that the situation does not improve, then I would recommend you contact Laura, from therapyfelina.com

      Cheer up.

  22.   Rachel said

    Hello! We have a four-year-old puppy and a cat and a two-year-old cat. They have always gotten along well since they have grown up together. The cat got pregnant and had four babies, we left her two males and gave her the other two. The babies are now five months old, they all sleep together in a big box with their blankets in the yard.
    The problem has begun to emerge now. The mother of babies is scared, and does not want to count on her babies, her brother or the dog. She even snorts at them and is super surly with them. She only eats when I come home and I put the food in the kitchen while she is alone. I don't understand what's wrong with her? Could someone give me some advice or explain what could be happening to her?
    Thank you.

    1.    Monica sanchez said

      Hello Rachel.
      It may be that he has gone into heat again, and that is why he behaves that way.
      My advice is to take her to castrate, so that she no longer has zeal and can (you) regain normalcy.

      By the way, your children won't be long in reaching sexual maturity either. Between 5 and 6 months of age, kittens can become parents for the first time. It would also be advisable to castrate them.


  23.   Guille said

    Hi, how are you? My case is the following; I have two male cats (one a year old and the other 6 months old) as I could not have them at home anymore, I looked for another home, but I only found a house for ONE YEAR, however after two weeks they returned it to me because they were given one female cat. The problem is that now that the older cat has returned home, it attacks the smaller one, bites it and acts very strange, it doesn't want caresses either (it was very affectionate before this). I am concerned that he has gone into heat for the female cat of the adoptive house. What I can do?

    1.    Monica sanchez said

      Hi Guille.

      If they are not both neutered, it would be ideal.

      Then, put the one who has been in the house for the shortest time into a room, with their food, bed, water and litter box. Go changing their beds for three days. This way they will get used to its smell.

      Then, take every opportunity to give the same love and attention to both of you at the same time. Give them treats (cat treats).

      You have to be very patient, but little by little, as the weeks go by, you will see changes.

  24.   CRISTINA said

    Hello, I need help, I have three cats, one about 8 months ago I operated on her, she was already 2 years old, I always got along well with the one-year-old cat, but I feel that something changed between their relationship after the operation, to the other female the male cat accepts her, but suddenly attacks her and there is no one who can take it away, no scolding or nothing works, she just wants to bite her regardless of my opposition to her action continues and I have to take it away, there is something I can do ? Why accept it? Some tip why scolding him doesn't work and I don't know what to do? but very little. Please help, I love you very much, he loves me very much and she is the ones who seek me the most of the three I do not want to think that they are jealousy because I try to give them the same affection, but it bothers him when I caress her and I have also seen that he attacks her later

    1.    Monica sanchez said

      Hello Cristina.
      I recommend presenting them again, as if they did not know each other. Take your cat to a room with food, water and a litter box, and exchange their litters for three days.

      Then, set her free, let them smell each other and get back together.

      Surely what has happened is that when the cat is brought back from the vet, the cats have felt the smells that it must have 'caught' in the clinic, and that has made one of the two see it as a strange cat. That is why it is advisable to re-present them.


  25.   chanetonr said

    Hello, 4 months ago we adopted a new kitten. We have had our cat for 4 years and she always got along well with our dog, but when she saw the new kitten she became enraged and ever since then she runs and screams. Now our kitten is 5 months old and he acquired the knack of running my cat by throwing himself on top of her (he is neutered). Our cat is suffering a lot and we no longer know what to do to make living together better. I need help!!!

    1.    Monica sanchez said

      Hi ChanetonR.

      It is normal that the kitten wants to play, and goes after the cat. Kittens tend to annoy adults a lot, but adults put limits on them (with growls and / or slaps).

      My advice is that you play with your kitten. Tire it out. Take a long rope (about 50cm) and move it like a bird. Make a ball -the size of a golf one- out of aluminum foil and throw it to him to fetch it, as many times as necessary until you see that he is panting (that is, he will be tired).

      In this way, the cat can be calmer.


  26.   Julia said

    Hello, I would like to ask you one thing that has me very surprised, I have two kittens, one Siamese and the other tortoiseshell, both came home with a month and a half the same day, one in the morning and one in the afternoon, they adore each other but when they The neura attacked each other with violence, especially the Siamese to the hawksbill. We believe that it is because the tortoiseshell refuses to continue breastfeeding it (without milk of course, they are the same age) but it is a vice that it took and it seems that the tortoiseshell has gotten tired of it and hence it attacks it furiously. What could be done ?? the truth is that they get along very well, except when the Siamese wants something. Thanks for your reply

    1.    Monica sanchez said

      Hello Julia.
      It is normal for there to be that type of 'fights' or arguments. They occur even in the best families 😉

      Do not worry. Little by little they will make their limits clear.

      Of course, play with both of them for a while every day so that they discharge energy and are somewhat calmer.


  27.   citlali said

    Hello, good day, I am 7 years old with two female and male cats, the female is a castre a few months after adopting her and the male I did it a few days ago, since I returned my male growls a lot at my cat, before they spent it together and they lay down together they were very close, I don't know what the behavior of my male cat is due to, I don't know if it is because he is still convalescing from the surgery, I want to know what to do so that they can be united again!

    1.    Monica sanchez said

      Hello Citlali.

      Yes, what you say usually happens a lot. After surgery, the ideal is to take the operated cat to a room and leave it there until it has recovered. In this way, when grooming, the odors that have been brought from the veterinarian are removed, making the other cats with whom they live feel calm.

      But hey, if this has not been done, you have to be patient. Give both of you cat treats every now and then, and they'll likely be okay again soon.


  28.   Mark said

    Good morning, I have a 10 year old Persian and a British one that we brought 1 month of 3 months ago. We have already released them for a week, after completing the presentation protocol. The first 2 days, the big one made a big mark on the little one, following her wherever she went, lots of snorts, grunts and some attempt to strike but at first glance not violent. After a week, I don't notice that there has been improvement, the big one continues to snort and growl at the little one. The little one doesn't stop playing, the big one gets overwhelmed and tries to get closer to her but the older one won't let her, constantly snorts at her and when she sees her look away or lie down, she leaves. Thank God, there are no aggressions, and if there are, they are small claws which do not cause any kind of pain to the little girl. What can we do so that the older one lets the little one get closer, or do we give time to time?

    Thank you very much

    1.    Monica sanchez said

      Hi marcos.

      It is normal for the oldest to behave like this. In fact, I can tell you that one of my cats, now deceased, took 2 months to accept a kitten.

      Little by little, give time to time.

      Greetings and encouragement.

      1.    Mark said

        Perfect, we will do that, with a lot of patience, there is no other choice. What we are seeing is that these last 2 days he is chasing the little one more and with "the loosest hand", more paw touches and lots of snorts and grunts. He does not throw himself at her or anything, that if, as the little one is racing, when he passes by he tries to catch her in a bad way. I do not know if we have done wrong but they have spent 3 nights spending the nights alone already….

        1.    Monica sanchez said

          Hi marcos.

          Yes it's normal. And when the little girl is an adult, they may "fight" from time to time. Do not worry.

          Anyway, give them both, at the same time, and whenever your budget allows, cans of wet cat food (same brand, same flavor). The fact of eating together and the same, in the same room, will gradually make them accept more.


  29.   Douglas portillo said

    Hello good Morning. I have 2 cats, a 5 year old and a 7 month old rescued.
    At first the older one snorted at the little one, but we introduced them and the older one accepted it. But, for a few weeks when the big one is preening or goes to bed, it is a closed place and the little one goes to play (jumps and bites him at stake) the big one snorts at him. This is not all the time, since sometimes if he plays with him and they get along as if nothing else, but regularly when the big one is licking or lying down that he approaches is when he snorts him.
    At the moment both are in treatment due to gastritis or caused by a negligence of a veterinarian, and another doctor gave them subcutaneous medications (more injections to the older than to the little one)
    I would like some advice, thank you.

    1.    Monica sanchez said

      Hi Douglas.

      Do not worry. It is normal for the older cat to hiss when the little one gets a little heavy / stubborn, and more if it hurts. As long as the thing just stays there (snorts, maybe some slap), nothing happens.


  30.   Aydee thumb said

    Hello, please, I need help, I am very confused, I have 6 cats and each one has arrived one by one, the first cat is a cat, and the others have been with me for 7 years and the others, successively, but they have all been together for about 2 years, and they have had small fights very rarely, but one night my cat, the one who has been with me for 7 years, was in heat during those days, and she started it with one of my cats who has been with us for 5 years and I couldn't see it as if it were unknown but the strange thing is that my cat has not left the house or anything different than usual, I would like to know what happened to him is very strange but his sharing is only with one in particular with the others is totally normal

    1.    Monica sanchez said

      Hi Aydee.

      Heat makes cats, both female and male, behave differently than they normally do.
      Sometimes what you say happens, that the cat gets angry or fights with you.

      My advice is that if you can, go and castrate the cat, because every time she is in heat, now it is possible that there will be fights again. And there is also the risk of getting pregnant.


  31.   brenda said

    Hello, I have a problem that I don't know how to solve. Turns out I have two adopted cats. One is neutered and the other is not. But they fight a lot. I had the intention of neutering the other but it turns out that the one who is neutered hits the one who is not and my concern is that if I neuter him the other cat will hit him even more. I don't know what to do, what could you recommend me. The cat that is neutered beats even the largest dogs that pass by my street.

    1.    Monica sanchez said

      Hi Brenda.

      My opinion is that if you castrate him both will be calmer. Cats are guided a lot by smell and pheromones, and right now the cat that is not neutered makes the other uncomfortable, because perhaps it is the time of the cats' heat - if you are in the northern hemisphere or live in a warm area.

      Anyway, you have to know that just castrating him will not solve the problem. It is also very important to play with the cats so that they burn energy, and thus they are calmer. Also, from time to time it is not a bad idea to give the odd treats, such as cans of wet food, to the two of you at the same time and in the same place. This will gradually make them get along better.


  32.   hilt said

    Hello, 5 days ago I took one of my 13 year old cats to the vet for a gastric problem. It was about 4 hours, on the way back my other 12-year-old cat is super fearful of him, hisses and yells at him. You panic. I have done everything so that he can recognize his smell again, but there is no improvement. The 13-year-old does not attack him but gets angry because he snorts at him. I have already put feliway, I have rubbed him with the same blanket ... I have made him suck so that he recovers the smell but ... nothing works. I don't see a solution, it makes me sad. At night I separate them. I'm really desperate. Any advice please. Thanks, I'm Elsa.

    1.    Monica sanchez said

      Hi Elsa.

      A lot of patience, is what it touches 🙂
      Patience and perseverance. Keep stroking one and then the other to exchange smells, give them some food that they both love in the same room, play with them.

      Cheer up!!

  33.   Cecilia said

    Hello Goodnight
    I have a 4-year-old cat, it is a bit complicated and an 8-month-old cat gets along relatively well but it's been a while since the older one gets scared and snorts etc.
    The other one attacks him and you have to separate them .. even the older one attacks you sometimes now the little one hisses at him is afraid and the other attacks him .. when he hisses at him they told me to keep them about three or four days apart. in different spaces without seeing each other .. can it be that they will never be supported again?
    That is asuduo that fights are punctual but it gives me death one day they get really hurt
    Thank you

    1.    Monica sanchez said

      Hello cecilia.

      Are they both neutered? It would be good if they were, since that way they would be calmer.
      In addition, it is important to play with them, this way they will feel tired and will be more tolerated.


  34.   Clara said

    Hello good day I have two male cats both sterilized one is 1 year 9 months old and the little one is 9 months old together they are already 7 months old but more than two months ago I took the smaller one to be sterilized and the big one hissed at him had calmed down but now about three four days the big one started snorting at him again and wanting to hit him what can I do? The little one sleeps in a separate room at night to avoid fights when we are sleeping

    1.    Monica sanchez said

      Hi Clara.
      In these cases, it is best to be patient.

      Dedicate the same time to everyone equally, give them love, pet them -if they allow themselves- and from time to time offer them a special food (cans of cat food). They usually love it, and that will help the situation gradually calm down.