Just watched my dogs play this morning
and realized how well they do together.
Max, our Alpha guard dog(GSD mix) is very dog aggressive. To get a pack mate, we let him pick.
Molly is a rescue whippet mix. She was the most abject pathetic dog I have come across in many years. Was scared of everything. Afraid to move on occasion.
Now, she chews on Max, jumps on top of him, runs under him, and in general bedevils him to distraction until I can exercise her. He just shrugs it off or plays with her.
It is an amazing and refreshing sight.