Hi all! First post here- just adopted two cats about a month ago, their owner needed to rehome them. They aren’t related by blood but have been together pretty much their whole lives. They get along fine and will sometimes play together, of course with the occasional brother / sister annoyance. But lately in the mornings, the boy will play with his sister too much and she gets annoyed and starts hissing and growling, and he doesn’t seem to know to stop so he’ll keep chasing her and annoying her. I’ve had to step in because it’s disruptive to my sleep, I’ll hold him for a second (he doesn’t love being held) and he kinda realizes that’s his punishment
any ideas why he keeps going when she’s hissing and growling? They dont seem to have a super strong “alpha” among them but if anything it’s the girl. Maybe he’s just not the brightest? Thank you in advance 

