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My cat is aggressive to my new cat. How do I stop this behavior?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 10 lbs

What are some examples of dominant behavior in cats? I adopted CiCi first and she was the only cat for about a few months, then I adopted Autumn. Since then, it seems CiCi will dominate Autumn until Autumn becomes submissive. However, this behavior appears to be getting more aggressive in nature and I don't know how to stop it. What can I do to stop this behavior?

1 Answer

Most Helpful Answer

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Answered By Oneal Bogan, DVM

Veterinarian

Published on October 12th, 2017

Hi there. Dominant behavior in cats can look like many things, but some examples are litter box guarding, food guarding, attacking, urinating outside the litter box and hissing/growling. I would make sure you have 3 litter boxes (the rule is # of cats + 1 litter box), have 2 places for the cats to eat so Autumn can eat in peace, and use a squirt bottle with water for Cici if he attacks her. There is also some calming aids you can try. One is the Royal Canin Calm diet (feed to both cats), and Solliquin (natural calming supplement, in treat form). Both can be purchased from your vet. Best of luck.

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