Believe it or not, but I've trained all the kittens (Basie and Hermie) to cry out if they want me to stop the fights.

I did it by breaking up the kitty wrestling when the smaller one (kitten) would cry.

The reason I know I trained them is cause now they wrestle and Hermie (and Basie when he was young, wrestling with Noah) is super QUIET!! On the rare occasions when it gets too rough for her, she'll cry out and I'll pull one of them away.

It works, amazing, huh??