Boxerpudge is right-any dog can attack. My mutt and I have been accosted by a pitt bull-on the other hand years ago when my Irish setter was not more than a couple months old his favorite plymate was as adult pittbull, and she was so gentle with him. I spend a alot of time at obedience classes with my bassets and have seen aggression from many breeds-even those generally thought of a gentle mild mannered ones.