George,
It is hard to tell on the crushed piglet. The piglet may have been weak or it may have been the inexperience of the mother. Time of year can also have a little to do with it as the piglets are seeking warmth and may be less apt to get out of mama’s way even when she does the chit chatting. ere the litter sizes comparable? More piglets means better chance of a slow run out of mamas way.