Lilli, bless her little 4 lb self, shakes the living bejeesus out of her toys! I did have to teach her that she may NOT bite my hand with her teeth. Now, her (and all my babies for that matter) can lay rough with their toys and I can play with them, but they know to be watchful of my hands and limbs. And the few times they have gotten me on accident while we were playing, they IMMEDIATELY step back and give me the most sorry look ever! lol They know they did something they weren't supposed to and they're sorry for it. I know also that it was an accident. It's just all about teaching. She's a puppy, she'll play rough and tumble. Just make sure she knows to be carful of you