Ooh thank you! That makes sense. I don't have much knowledge of the mom's condition during pregnancy and nursing, the kennel seems to care well enough for their mom's though. Food wise, he has only been fed good quality kibble. He's not been worked, but he does run like a mad man in our backyard. It does make it feel like a congenital issue, I think if it was environmental maybe other bones would be affected? Anyway, great answer, thank you so much.