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My male cats are suddenly aggressive and peeing. What's wrong?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 4 years and 6 months old | 10 lbs

Hi there! I have three cats that I’ve lived in the home together for a minimum of three years. All of a sudden within the last few weeks the two male cats have shown random aggression in fear towards each other. They get into growling/yelling matches and one of my cats get so nervous that it pees. Nothing has changed in their diet or environment. When they get into these matches, they don’t physically harm one another but I’m still concerned.

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on July 6th, 2020

That is concerning! As with any sudden change in behavior, it's a good idea to schedule a veterinary checkup for all of yours cats. In some cases, aging related issues such as pain or arthritis may cause a cat to become more aggressive in an attempt to protect itself, or it may start getting picked on by other cats in the household. In the meantime, making sure all three cats have easy access to food, water, litter, places to hide and rest, etc can help create zones where they can relax without starting a fight over these resources. Adding in a pheromone diffuser such as Feliway to shared spaces (such as eating or sleeping areas) can also help reduce inter-cat aggression.

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