If you're still in Missouri, please be sure to steer clear of any/all puppy mills or pet shops (esp. ones that brag that they sell from "USDA kennels" or "private breeders"!). Your state is littered w/ them! More so that any other state in the US! Did you know that?
What's your budget for a pup? PM me if you want a few referrals on breeders, unless you've already gotten that taken care of!
~Leslie
(yorkieK9trainer)