You're not kidding! Go around his house and you have to watch he doesn't sneak around behind you. He'll bite you right between your shoulder blade where you can't reach him. He hasn't gotten me yet, but I know his parents get "on edge" when he's like that, as he's drawn blood from them more than a few times if they don't see him circling behind them!
He probably wouldn't like my blood anyway, tastes too much like booze! Haha.