When Matt and Chester look out the window to view the fallen "body", you can see a person's neck, hairline and left ear. When they turn the body over to show Kate she had shot a dummy, the head is a stuffed burlap bag with the collar high enough to cover any neck and there are no ears on it.
When Matt and Chester are playing checkers, Matt jumps one of Chester's checker pieces, but he doesn't remove it from the board.