I'm guessing this long post is to somehow justify breeding tiny females since this thread picks up from a thread now in the breeder's forum. In your post you use this example
"if you have a 4-lb female she need to breed a 3 or 4 -lb male", but you go one further and breed 3 pound girls. In another thread, (
http://www.yorkietalk.com/forums/gen...ng-home-5.html), in post # 63 one of your customers states that they have one of your 3 pound girls and you allowed your 1 1/2 pound stud to breed with her. Not only is the girl too small (IMO) to breed, but you go against your own stated logic by mating her to a male that's half her size. Isn't that the same as breeding a 3 pound male to a 7 pound female, which, in your above post, you say you would never do?
I will say that my best pups have come from one of my boys that is a bit over 6 pounds bred to one of my girls that is 5 pounds. They produce beautiful pups that are well balanced structurally and have inherited the best traits of both Mom and Dad. The largest pup they have produced so far is a female that weighs 5 pounds, which I kept. The other pups were smaller with the smallest being 3 1/2 pounds at 8 months.
The above example I gave goes to show that there is much more to breeding than just picking a smaller male to go with a female. You can get great results using a somewhat bigger male if you know your dogs. More important is to get dogs whose traits complement each other to breed sound, beautiful, healthy pups and not just shoot for purse puppies.
I won't even address the difference between show and pet quality dogs because I don't think this thread has anything to do with that despite the title saying so.