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Why is my female cat suddenly aggressive towards my male cat?

Updated On September 23rd, 2025

My 7 yr. Old indoor female cat is suddenly becoming aggressive and wanting to fight and growl at my MALE 5 yr. Old indoor cat. They both are up to date with their shots! She almost acts as if she doesn't know him.

1 Answer

Most Helpful Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on July 2nd, 2017

Something is probably going on with her, she is possibly ill or in pain and that may be causing her to be aggressive. i would recommend taking her to the vet for a checkup and blood test to make sure she is in good health first.

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