Chance does this also. One side of his face then the other on the carpet. Its a daily thing for him. I have taken him to the vet, and he has check out fine. I think it is allergies because he also licks his feet at night before bed. He eats Chicken soup, I was considering switching him to the raw but I don't know much about it. I would not worry to much...maybe its just allergies or just a yorkie thing
Chris