Hi.. my kitten is like that too..he bites, scratches and won't leave anything hanging alone until its at ground level, after which he just walks off and pretends nothing happened!! Anyway, from my personal experience, I've actually seen him tone down lots, and I think that your cat will be more tame after a few more months. Maybe after getting it sterilised (is it male), it will also be less inclined to play rough. Good luck! And kittens are always such a joy to have! Enjoy it while it lasts