Got up this moring and all my cow were in the front pasture trying to get what grass they could. I had been feeding them some square bales each morning at the hay barn for the past couple of weeks. Noticed my pup (7 month old Border Collie) out with them. He started 1 cow toward the hay barn, drove her all the way to the barn and the went back and got each one (one at a time) and took each to the barn. The bull gave him some trouble but he did get him in the corral.  Walked out and gave him a good rub and a couple of treats.  After I fed, he went back to the house and laid down. Haven't noticed him bothering the cows otherwise. Now if I can just teach him to do that on demand.