Dog is a plush dinosaur who comes to life in Living with Dinosaurs. He has an obsession with Elvis Presley. Although Brian Henson was the lead puppeteer and voice, Sue Dacre and David Greenaway assisted. He also made a cameo appearance at Jim Henson's Creature Shop in The Secrets of the Muppets. On Sid the Science Kid, Sid owns a stuffed dinosaur named Arnie that closely resembles Dog.