Sam has always been in a one dog house and thinks he's king of the neighborhood. We had Nikki, our daughter's dog for several nights and they had to decide who was going to be pack leader! They ended up taking turns at being boss and it was really funny to watch the interaction between them. They are so totally different in personality and behavior. As you can see, they finally settled down after a day of play. I think Sam will miss her, although now he has all my attention again!