I saw this video on youtube and thought it was so funny how secretive the ball was about biting. When I've seen BP's bite, its usually a strike bite. The ball in the video bit the kid so casually that the kid didn't even probably know it was coming. Is it normal for them to do it like that? Its about 40 seconds into the video.
http://www.youtube.com/watch?v=h9_6b_RZ1pg