Just my 2 cents - people need to SEE if their pet is breeding quality
before deciding to breed
If a dog is already known to be smaller & you question the act of breeding her out of worry for her size - they WHY DO IT ??? Follow your instinct - if you think she's too small then she probably is.
So many small breeds are being OVER-bred these days because the price of puppies is so high -

...but it's also why we're seeing so many deaths.