Well, when our silky/yorkie mix, lucy was a puppy, she was extremely rowdy, and she'd do the same thing, except when we'd lay down, she'd attack our hair

being extremely tender headed, I cuved that behavior by using a loud NO and getting up when she got to rowdy, giving her the impression that if she's rough, she gets no more play time.

Oh, and a GREAT place to look for collars/harnesses is Petsmart. They have a new line of collars/harnesses just for small dogs! We have 2 of their collars, and 1 of their harnesses! There's also a small "puppy" line and small "dog" line. So make sure you don't miss the smaller puppy ones because the others wouldn't fit our girls until they were older. Dixie is still in a puppy one, and she's 8mo, but Lucy is 7mo, and is in a dog collar. It'll depend on your pup. Good luck!
