I bought 3 berkshire pigs about three weeks ago they were all boars about 30 pounds . I castrated them that day and have been feeding them medicated pig feed . they have all healed nicely are puting on weight , doing good . yesterday I checked them about 8 am then started building fence . at about 10 am I went to my pick up to get some water and noticed that one of them was laying down when I checked on him he was dead . like I said at 8 he was fine . there were no marks on him any where , the temp was fairly cool he had plenty of water . do any of you have any idea what could have caused this . at first I thought snake bite , we have copperheads , and pigmy rattlesnakes in our area . I checked him closely there was not a mark any were on him and no swelling any where. the only thing I feed them other than his feed was some watermellon rinds and some old peppers .