You should always ask about the health guarantee, how their puppies are raised, at what age do they let them go, how big are the parents, etc. What are you looking for in a yorkie......do you want a small yorkie under 5 lbs or is size important to you? What type of coat do you expect your yorkie to have? Of course many breeders will just tell you anything to sell a puppy so it is advisable to study the breed and take your time. If you are looking for a pup from a reputable breeder then you might go to the YTCA website to find a breeder near you. Most people don't have much luck there but it does not hurt to try. Good luck in your search. I forgot to add that this website
Teacup Yorkie Puppies for Sale | Breeder | CA does advertise teacup yorkies and that is frowned upon by the YTCA.