Maybe you did have prisoners then. We couldn't force our dogs to run away if we wanted to. If we leave the back gate open and go inside, they just wait by the back door. If we leave the front door open, they just stand there and watch the world. If they ever lose track of us at a park, they go crazy and start running all around everywhere looking for us. Basically dogs that are part of your family know where they want to be, and it's with your family.