[Sidney]

I'm reading a book on breeding by Anne Seranne and she says to measure a female is ...."the distance from the anus to the vulva should measure 3 man's fingers, or approx. 2 1/2 inches. Space between the pelvic bones should measure 2 man's fingers or about 1 1/2 inches. These measurements are ample to permit the free passage of the head of a yorkie puppy to pass into the birth canal."