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My intact male cat tries to mount new female. Is she in danger?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Female | spayed | 5 months and 10 days old | 11 lbs

Hello I just adopted a female neutered cat but my 10 month old male cat (intact for now but fixing him soon) tries to bite the back of her neck and mount her she doesn’t let herself and manages to push him off her, will he kill her if he can’t mate with her? If left alone?

2 Answers

Most Helpful Answer

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on February 11th, 2018

I have never heard of one cat killing another over mating issues, so you shouldn't need to worry about this :) However, I'm sure it is annoying for your female cat to have him constantly trying to mount her, and this can certainly lead to developing aggression issues between the cats over time. I would try to get your male kitty neutered as soon as possible, to help prevent this from continuing to happen. In the meantime, if he won't leave her alone, you may need to keep them separated until after he is neutered.

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Other Answers

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on January 21st, 2018

    Male cats do not go into heat, only intact female cats go into heat, but the behavior Keneau is showing is a sexual behavior. This is something intact male cats do when they are mating with an intact female cat. It can also be a dominant behavior. If he is not hurting her when he does this, it may be more of play thing but I would discourage him from doing it. When you see him start to do this behavior, distract him a toy and a treat. Good luck, I hope this helps!

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