[Allyp]

Hi I'm new to this site. I have a baby boy yorkie who is 12 weeks tomorrow. In the last few days he's been starting to chew the walls a bit. When I walk he also makes play grow noises (kind of like he is chasing my feet). How do i tame this behavior? Is this behavior normal? I'm sure he just has some pent up energy but I feel like he us starting to act out a bit. He used to very good with using his pad and now he won't. He just sneaks away and tries to pee on the carpet somewhere.