Three dogs that play the role of one dog in a commercial. The pay-off of the commercial was: ”When you are ingenious, you will use the Postbank”. So a lovable tinker made a robo-dog and send it out to the mailbox. As the dog had to do many different things, there are a number of versions; both radio controlled and mechanical. None of them can do what the other can do, but between them, they can do what one dog seems to do…in the movie.