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Why is my spayed female cat attacking my male cat after her surgery?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 1 year and 8 months old | 7 lbs

HELP !!!! My female cat was spayed at humane society clinic 2 weeks ago and now all of a sudden attacking viciously my other fixed docile male ! She's terrifying our family and we can't keep them separated if you open a door she darts in fur and fangs hunting him . She was sweet and happy before all this and they were fine the last 2 weeks while she was recovering no issues ! I'm in tears clinic closed what do I do ??

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on May 2nd, 2018

Sometimes a cat that is not healthy gets attacked by the other cat in the house. There is a possibility that your male cat is having a health problem, such as a heart problem and she is attacking him because he is "weak". You may want to take your male in for a general exam and tell your vet about the attacks. If your male hides more than usual, and runs away from her hiding, this just may be why. I cannot think of any other reason, especially since they got along in the two weeks after the spay.

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