Ahhh! Those little puppy teeth are like needles! I still remember when my Setter was a pup, and she playfully sank her teeth into my forearm. I screamed and instantly yelled at her and cuffed her several times on the snout. Scared the hell out of her, but in the next 15 years she never touched me with her teeth again. One of the few times I ever had to reprimand her. She's been gone 8 years now, and I still miss her.