Our dogs are not supposed to work cattle without us, but one morning I caught Skidboot and Chappy, who were young at the time independently moving heifers in a pasture by the house under a nearby tree. It was very hot out and Chappy was bringing them in (a few at a time) to Skidboot who then held them under the tree. We are sure Skidboot was the one giving the orders because she was in the shade while Chappy had to work in the sun!