Do Cats Get Jealous Of Other Cats?

Cats do get jealous of other cats, pets, and sometimes even humans. It can be very stressful if you have just introduced a new cat into your home and your old kitty becomes jealous. However it is important to understand that this response is totally natural. Cat behavior is very complex so it takes time and patience to help your feline friends adjust to each other. The good news is that there are a few things you can do to help make this transition easier for both your old kitty and the newcomer.

One important thing to consider when bringing a new cat home is whether or not he or she is spayed or neutered. Male cats are often involved in inter-cat aggression, which most often occurs when a cat reaches social maturity between two to four years of age. Although this type of aggression is usually seen in males competing for mates, it can sometimes occur between cats of any sex when territorial conflicts occur.

The first step toward eliminating this type of behavior is to make sure that both your old cat and your new cat are spayed or neutered. If this has already been done, there are other ways to help with territorial and aggressive behaviors in cats. Pheromone products are available on the market and can help reduce aggression and tension between cats. One such product is called Feliway. This product is a plug in device that diffuses cat pheromones and helps to calm kitty. Having one in every room is recommended for best results. Feliway collars are also available to purchase. If these products do not work you might want to consider other alternatives such as kitty Prozac.

That New Cat Smell

When you first bring a new cat home it will have a strange new cat smell that screams “intruder” to your resident cats. Some cats may be more troubled by this than others. Integrating their smells over time can help resolve the conflict. Rubbing a towel or blanket that already has the scent of your house on it can help make the new kitty smell like he belongs. After rubbing new kitty, rub your resident kitties with the same towel to mingle the feline’s scents. This can be done several times a day for several weeks.

Territorial Issues

Another good idea when bringing a new cat home is to make sure that he or she has their own litter box. This will help resolve any territory or potty issues that may occur between new cats and resident cats. The general rule of thumb for a multiple cat house is that there should be a litter box for each cat, plus an additional litter box. Having more than one litter box in the house can be very beneficial as sometimes cats will begin urinating or defecating outside of the litter box or throughout other areas of the home as a way to mark their territory and tell the new cat “this space is mine”.


One common mistake that many pet owners make when they first bring a new cat or other pet home is introducing the new pet to their resident cat right away. This is not the right approach if you have hopes for the two to become best friends. The better method would be to take the new cat into a room and keep it there for 7-14 days so that the two cats can get used to each other’s scent and presence through the door. Make sure that your new kitty has everything he or she needs to survive. A food and water dish, a litter box, some toys, etc. During this time be sure to set aside some one on one time for both kitties so neither feels neglected.

Cats by nature are territorial creatures. When bringing a new cat home he or she will need to establish territory and your resident cat(s) will need to defend theirs. This often results in a cat fight or two. Keeping your new cat in his own room for a week or two will help him gain confidence and claim that room as his “territory”.

During this time it can be helpful to have the two cats switch places every now and then. For example, let your old kitty out into the rest of the house to wander around and get used to his new belongings, and lock your old kitty in new kitty’s room to get him used to new kitty’s scent. Mingling the two scents will help the two cats get used to one another better.

Eventually you can also integrate meal time, shared play time and treats. This will help the cats get along better. Start feeding your old cat outside the new cat’s bedroom door, or try using a pet gate or a cardboard poster board to block the two from seeing each other, but allow them to be close enough to one another to know that they are each there. They will smell one another and if you feed them together they will also begin associating one another with food and other positive things. Eventually when the cats seem to have warmed up to the idea of sharing meal time you can ditch the walls or gates and see how they do.

Reinforce positive behavior towards one another by feeding the cat’s treats when they are behaving and getting along. Try to play with them both in the same room until you can eventually get them to play together. If they start to fight, lock one of the kitties up for now and continue this until they can be in the same room together without fighting. Never leave two cats that do not get along alone together. Eventually the two felines should be able to coexist peacefully in the same home.

Breaking Up Cat Fights

During this entire process you will most likely be required to break up a few cat fights every now and then. Never reach in between two cats fighting and try to separate them yourself. Instead, squirt the cats with a squirt gun or a spray bottle filled with water, from a distance. It is best if they do not know that you are the source of water. Loud noises can also be affective in breaking up a cat fight. A can full of pennies or something similar can be used. Never chase or hit a cat with an object such as a broom. This will only increase aggression and can permanently destroy a cat’s trust in you. The best method is to reinforce positive behavior when the cats get along so that they begin to associate good things happening when they are around one another. With a little time, patience, and understanding, you should eventually be able to achieve household harmony within a few months.


  1. DeborahW says

    I know cats get get jealous of each other. I have two cats ages ages 11 and 10. They have been together since kittens, obviously one is a little older. If I show too much affection to ne the other one has to get in there and say “here I am, too”. Jade the older cat doesn’t get quite as jealous as Sierra, but Sierra is my baby, she is so laid back and and still acts like a kitten, and like to be treated like a baby, where Jade is more sophisticated and refined. I have trained my cats to do tricks that dogs do, like sit, shake friends, and sit up pretty. I find they were easier to train than a dog. Jade will even play fetch, while Sierra will play stair ball.

  2. Zeek says

    HI DeborahW,

    Great sharing of info. Thanks for that. We have 2 older cats and 1 young cat. A stray kitty wandered into our yard, and eventually came up to the lower level window. It was obvioous he (I think the kitty is a “he”) was sickly. I took the screen off the window and am keeping Leo, the young kitty in isolation but withing the home so everyone can sniff everyone. He looks like a Lion so we named hime Leo, consistent with other constellations the other 3 cats are named. You provided some good advice and substantiated some of the beliefs I have in integrating new cats into homes.

    Last summer, we took in a cat that lived in woods. I have provided food, clean water, and some treats through the summer. When Fall came, I took into the house with a live trap and he adapted really well to the two older cats and the household and the yard. We lost him though. Under watchfull eyes, he managed to wander into the neighbors garage and suffered a run-over from their vehicle. It happened in an instant… just a minute or two. We adopted a kitty from the shelter last Fall and he plays fetch, jump, and monopoly with the treats. He’s very curious about the new guy on the block.

    So now we’re up to 4 cats and I think we are maxed out. I wish there was a way to convice lots of people that cats really intelligent and great pets, so loving, longing for a head scratch or a chin rub, and loyal. There are awful cat tragedies in the Twin Cities in MN where I live and I’d like to be a part of an activist group. A Co-worker actually found a cat in a garbage can and she rescued the cat an is very happy with her pet. How do cat lovers stop the behaviour of cruelty to cats? Any ideas? My Brother has 6 cats and they all get nutrition, love, and play. It’s so easy and fullfiling. Wish I knew how to contribute more.


  3. Christine says

    My daughter has a ginger tom, about 4months old, and has just introduced a kitten (approx. 8 weeks) to the family about a week ago. The older kitten stalks and constantly attacks the younger one, biting, growling, hissing and spitting from both cats. She is trying the water spray to stop them, but this method as yet does not seem to be working. They both get the same attention and treats etc, but I do feel sorry for the kitten as at the moment , it gets no peace…they are both tom cats, I will ask her to look on this site, as their is lots of good advice, they are even worse at night.

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