please help. my ds has started biting in anger. we have talked to him about moving waay/counting to ten/take a deep breath etc...but it just doesnt work. when he bites, we remove him from the situation/talk to him about other ways of handling anger, and remove a toy.(nintendo/tv/etc) he seems sorry, but it keeps happening. he is also punching/scratching too. he has up to now, been a loving, gentle boy. nothing has changed at home, and school say there is nothing wrong there. he does say though, that one particular boy is constantly nasty to him at playtimes, tripping him up/name calling/taking toys.this boy seems to be the alpha male in the group. how can i help him?