I'm so glad to read that you're reconsidering!!
I'd like you to meet my Shih Tzu, Carly. She is purebred, AKC reg - which, if no one has said this before - means NOTHING. Having papers has nothing to do with quality, and let me tell you the difference.
I foster dogs, and I recieved Carly as a foster pup when she was about 4wks old. She was from a BYB who did not health tests, screenings, ect. The mother died after the pups were born due to internal bleeding that was left untreated, infection set in and she died a slow... painful death. The BYB did not have the "time or money" to save the mother, or raise the pups. For weeks I bottle fed and made food for my Shih Tzu pup. If became quite clear very early on that she was, and still is, going to have some serious issues. Carly has a cleft pallet problem, sometimes she randomly hacks up moucus when her breathing increases due to exersize. She has a "reverse" heart murmur, her heat pumps an extra beat and works harder than a normal, healthy hearts. She has walleye, and eyelids that curl in 60% of the time, which causes her eyes to run constantly and need care like twice a day. She's very small, about six pounds, and is a very picky eater because her stomach is sensitive. Everybody wants her because of her small size, they don't relize what all is involved.
In addition to her obvious physical issues her temperment has suffered do to the early seperation from her mother. She's doing a lot better due to training, socialization, and influence from my other dogs. She's still jumpy at times, timid, and other times she is stupidly bold and borderline aggression. If one thing changes in the routine, or envoirment she spazes out. She won't eat and acts stressed for days until she gets used to it.
Its a never ending battle, and people laugh when I say I have a "specail needs dog." It's no joke, and that's why us Chazzers jumped on the bandwagon to stop you from breeding yours. There's WAY too much involved, most don't understand. Even if a person has good intentions, situtations like mine occur WAY too often.