Whenever James takes his dog for a walk, before attaching the dog's lead, he stands by the front door and calls the dog's name towards him. He does this even if he can physically feel the dog already waiting there. Otherwise, James might die. What's the explanation?
James lives in an alternate universe where dogs rule over the human race. The dog is blind and needs James to guide him around the futuristic city of Barkington. People are treated like trash and the "bad ones" get sorted out rather quickly. If your human doesn't do as he was told you might aswell get a replacement. "The dog's lead" is literally a block of lead James has to carry around in order to have his movement hindered. If he was to walk around without it the police would shut him down and James would be euthanized. James has to say the dogs name so he can fetch the lead block and attach it to his collar.