[QuickSilver]

That would imply that every puppy from show-quality parents would also be show quality.

I would imagine that yorkie size is especially unpredictable since the average yorkie was considerably larger than what is considered standard now.

Don't want to start a fight, but I just finished a book that was talking about often unexpected traits pop up when breeders of any animal try too hard to fit a physical ideal.

I kind of wonder if yorkies are especially hard to potty train because of some unexpected twist in the gene pool... could just be my poor training techniques, of course.

Anyway, In My Opinion, the breeder's most important jobs are: health; ensuring all the pups get good homes; and preventing pet overpopulation.