We also need to remember that the male does not determine the size of the pup at birth. The female, position of the pup in the uterine horn, and the resources determine the birth weight. The birth weight does not always correspond to the adult weight. I have a little guy who is not quite 4.5 pounds grown who weighed 7 oz. at birth. He had the uterine horn all to himself and had the resources to be big. The structure of the females rear is of much more importance than the size of the stud. I was given the rule of 3 fingers for the pernuim and two fingers for the pelvis to determine if the female is broad enough to free whelp.
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Tami |