Lillymae - perhaps you should read the entire thread before making comments like this. The vet never said it was fine to breed a 4lb yorkie FYI, she had already gotten pregnant by accident and was 6 weeks along before we found out. So due to the risks of doing an emergency spay that far into pregnancy, she suggested we carry it out, and most likely will need a Csection. So you're putting words in my mouth as well as the vets, because she never said it was "ok".. And let me note once again that the pregnancy specialist I saw is the author of a published book on the topic. So I took her advice, and I'm glad I did. Next time please read everything clearly before making remarks. Thanks
Sorry if I'm coming off rude, just a bit irritated.