We have a game we play when Major gets into a "puppy biting" mood. The game's called "All the Toys are on Major!" When he starts biting my hands, sleeves or pantlegs, I say, "All the toys are on Major!", distract him with a toy, then put all the toys around him! Works every time. He spends the next 10-15 minutes playing with one of the toys after another. He gets all his puppy biting done, until next time!