I'm curious if anyone knows how hereditary high birth weight is? Both my OH and his sister were large at birth (I want to say about 10lbs and 9lbs respectively) and were pretty chubby as babies (SIL likes to say she never actually crawled, but rather rolled around until she learned to walk!) I'm wondering how much OH's weight at birth will influence our future children's birth weight. Myself, I was an average sized infant (7lbs and I think 6oz or 8oz). I have to admit, one reason I'm wondering is that I've got cattle, and I know the males make a pretty big contribution to the size of the calves at birth. Curious if there's any kind of correlation there between cattle and people.