None of mine bite, except today Teddy kinda did but not hard but i still consider it a bite cause it was his intentions. I put him in the bathroom which is a decent size cause he keeps trying to jump on the bed to get to London(whos in heat), so i tried to put him in there for a few minutes when i couldn't watch him and when i try to close the door he growls hard and kinda bites me. He hates being alone, or in the bathroom which i have only put him there about 3 times cause of London. Well how do you react when/if they bite you? btw Teddy is not aggressive at all, he is the friendlist dog in the world but if you try to put him in the room or close the door on him he gets really mad