haha so have I.
It took me few years before deciding to purchase beautiful yorkshire lines to breed. so I know. I have successfully bred my male and female. I also owned another female purchased from Kim Avant's line but she was only 3 lbs and I AM NOT going to breed a yorkie that small!!!
FYI, My father use to breed Doberman Pinscher and German Shepherd dogs. So I practically grew up with LARGE dogs.