I have a 10 month old Yorkie, Molly and she gets very hyper when she plays. It's a puppy stage. Molly used to bite, but we would say "Ouch!" loudly whenever she would nip at us and she'd stop. As for her chewing, I made sure she had rope toys, kongs, fleece toys and squeaky balls for her to chew on. Whenever I would find her chewing on something she wasn't supposed to, I'd distract her and give her a toy to chew on. She no longer chews on shoestrings (of course, Dick has no plastic tips on any of his shoestrings) or the furniture, so it must have taken in her mind.

We continually remind ourselves she has a Yorkie body and a Rottweiler mind!

This is my MollyMonster

She looks so innocent here - don't be fooled!