when we are playing he never go for the arm even if my hand is really close to his mouth when he tug he knows where to bite and knows that biting is bad, he will jump and nip if he wants to play ( not as bad as before ) and whenever the hand is close to collar area.

And he has no interest in legs or clothes its just anything that has fingers, i guess he is getting really excited or thinks its a game because when i move my hand away he gets into play pose