My female, Sophie, is the alpha when it comes to treats and toys. She has actually made him stay in the other room when there was a new bone. However, my male, Toby, is always the one to bark at a noise or greet someone new. When they are playing outside Sophie is always on her back and Toby rolls around on top. He tries to get her to chase him, but she usually pretends to start running and then stops. He then runs to her. Very funny to watch.