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My male cats are fighting viciously. How do I stop cat aggression?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 6 lbs

I have 2 cats -- brothers -- 4 years old. They hang out together all the time, and "roughhouse" with each other regularly, which I take to be normal. But sometimes, usually at night, they will wake us up with vicious, screaming fights, leaving clumps of fur around, growling, etc. we try to break it up with clapping or a spray bottle, and usually they are fine the next morning. Last night it happened again, but today it has continued all day. Aggressor cat won't let his brother come upstairs.

1 Answer

Most Helpful Answer

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Answered By Susan England-Foster

Veterinarian

Published on August 20th, 2017

It sounds like you have a behavioral issue in the house. One of the cats is trying to be dominate over the other. I would make sure you have 1 more litter box than cat. Also have multiple areas to place food and water. This will eliminate competition over those things. I would try feliway in the rooms the cats spend the most time. This is a pheromone to help with stress. Increase exercise as best you can. They do make toys you can hid treats an the cat has to get them out. Also hid toys around the house at night so Mo and Francis have something to do. IF that does not work it is always best to have a good exam by a vet to make sure the aggression is not due to illness or pain. thanks for using pet coach

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