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Why is my unneutered male cat biting and humping my female cats?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | unneutered | 8 months and 16 days old | 6.3 lbs

I found blu about a month ago and just made him a inside cat 6 days ago, well I have 2 female cats both spayed. He keeps bitting and getting on top of one of my cats. Is that a normal thing? Maybe showing his dominance? Or maybe is it b/c he isn’t neutered yet? it only started about 2 days ago when one of the cats finally started to like him.

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1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on May 29th, 2019

Hello. First, thank you for finding, rescuing & giving Blu a great home. Secondly, make an appointment to have him neutered as soon as possible, otherwise he will torture your other cats & generally make every ones lives miserable. Plus, he will also start spraying & marking his territory. Every one will be happy once he is neutered & his hormones calm down. Thanks for using Petco Pet Education Center, formerly Petcoach.

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