I've never been bitten by one of my dogs. I've been bitten twice from my old babysitters dog & that was 100% unprevoked. I tossed her the ball & she would drop it in my lap & I did that a few times & then she bit my nose for no reason.. I thought nothing of it & tossed the ball a few more times & she did it again but march harder, I yelled at her & went home, I was about 9... 2 winters ago I was bitten by a pitt bull, but he wasn't a bad dog at all... he was at the shelter when I was working & I chose him as one of my training dogs & he ended up getting horribly attached to me & when it was time to work with another dog & went nuts & I went over to give him some attention & calm him down, he kept jumping up on me & bitting my coat & pulling me into his area & not letting me leave. The he bit my arm to bring me in closer & ended up marking my arm all up & I had 2 quater sized bruses... I was forced to stop working with him because he wanted my love too much & he was ready to do anything for it, including killing the other dogs... I was sooo upset because he was sooo obident & smart... u give a comand & he would stare at u until u told him to do something else... Luckly he was sent to a pitt bull rescue...