Hi guys!!!

So, I have three cats in total, well two are mine and the other one is my partners.

Two male (one is mine) and one female (who is also mine).

They all get along for the most part, my female, not so much with her brother who is my partners cat.

She is, however, obsessed with my other male cat.

She has gone through heat for the first time, it was difficult seeing as I needed to separate her from her brother who was getting affected but not my other male cat (who she clings to more) because he hasn’t reacted nor was he bothered.

Vets had said he won’t be reacting as his body is more focused on growing than having high testosterone levels.

Even though my female isn’t in heat, her brother has been trying to bite her and mount her (which I’m a bit concerned about) but from what I’ve noticed, it just annoys her and she gets angry at him for it.

I was wondering if this is normal? For my female cat to show no interest in her brother even when she’s in heat.

Cat pics included.

1st - female

2nd - growing boy

3rd - other male cat aka the brother