My puppy, Hockey, is around 2 and half months old now. He is very hyperactive and likes to bite on things...especially our arms and legs, which leave ugly scars on us. Is this behavior acceptable? I know during teething...he will tend to chew on things more often, but his behavior make it seems like a bad habit to bite on almost anything that interest him...yes...our poor flesh interest him the most. What should we do? Is beating him help?