Why is my unfixed male cat biting kitten's neck? Mating? How to stop?

Thanks for using Petco Pet Education Center, formerly Petcoach! Unfotunately, male cats are sexually mature as young as 6 months of age and typically act accordingly starting about then. I do not expect his “tomcat” behavior to stop until he is neutered or is geriatric (12+yrs). The behaviors could be especially bad any time there is an in-tact female anywhere nearby. Of course you can’t control that. Temporary distraction with toys, training, laser pointer, etc. may or may not work. Long story short, do yourself a favor and get him neutered sooner rather than later. Best wishes to you and Fuego!

Hi and thanks for your request. Probably she is not accepting the male as she is not in heat or she is already pregnant. As said in a previous question, I would recommend to separate them as you suggested or castrate the males to avoid further unwanted pregnancies.

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.

If neither cat is fixed, then the female's behavior could be related to mating. When a female cat is in heat, she can be aggressive to males. Queens (unspayed cats) can be very selective about whom they mate with, and your female may not consider your male a suitable mate. She is communicating that to him with her sounds and behavior. To prevent hormone related behaviors, which include your male spraying urine in the house, I would have both the cats fixed.

He is quite young to be sexually mature but it is possible. If he is mounting her then he could potentially get her pregnant. If he doesn’t want to mount her then it is likely that he his isn’t old enough. I hope this answers your question.

Your female kitten can definitely be in heat this young. I would recommend getting her spayed as soon as possible. If you feel Orion is going to hurt Calypso you can separate them to make sure he does not hurt her. Thank you for using Petco Pet Education Center, formerly Petcoach.

Unfortunately, brothers and sisters will mate and the offspring may have health problems, so I would strongly recommend having them desexed as soon as possible. Female cats come into season based on the number of daylight hours, so your kitten may come into season shortly (often January to February). I have attached more information about female cats below. https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=3604 So, I would have surgery done as soon a possible just to avoid any problems. Good luck! I hope that was helpful. Thanks for using PetCoach.