Mike -

Its all nutrition and age, infact I have reason to to believe that last pic I posted is a 2.5 yr old. I'll post a pic of that deer from the year before, you wont believe the change he made.

anyway, these bucks are big woods deer, the ones we take off our farm have more mass than you can shake a stick at... But once these deer get some age (i.e. 4+ they pile on the mass, my cousin kill a sweet 140+ deer here that has great mass, and awesome character....)