We have a female heeler that just loves to help. Everything usually goes fine until we are dealing with heifers that have just calved - or with bulls. She'll follow me into a pen - usually when I don't realize it. Next thing I know a bull or a momma is making a dive at me, because the dog has pissed them off and then runs and tries to hide behind me when one gets after her. My kids learn some interesting combintations of cusswords as I'm trying to cuss the cow, the dog, and get away at the same time.