My dog and I live alone together and she reacts to my parts differently. Sometimes the only way I can tell that I've switched is by paying attention to how she reacts to me. Some parts she is more apt to listening to, they are more dominant over her. So when she's not listening and not listening and not listening and usually she's right on top of it, I sit there and say "so either I have multiple parts, or my dog does". My dog will also not listen to other people period. Like my dad, or my brother, etc. She's a one owner dog. So for her to have an owner that has many parts is probably difficult. There is one part that I do have to separate her from. I typically put a door between the two when he's out, as he likes to say mean things to her and she likes to snap at him. It's for her protection and protection of the body in general. But any other part can roll around on the floor, pick her up, love on her. Do whatever. The little ones love her (and she loves and protects them). It took a lot of courage and responsibility for me to put a distance between her and the one who doesn't like her. He likes her, it's just she makes the rest of us happy, and he's an introject and anything that makes me happy, makes him unhappy.