Outside of The StoryTeller, Dog appeared in the introduction for the episode 103 of The Jim Henson Hour (performed by Kevin Clash), replacing the Thought Lion, and also appeared at the London Creature Shop office in "Secrets of the Muppets." Despite being a creature and not a Muppet, he is a member of "The Organazation of Muppet Dogs" in The Secrets of the Muppets.
Rowlf the Dog interviewed Dog in the Fall 1988 issue of Muppet Magazine. Dog tells the story of how he first met the Storyteller: he happened upon him one day in the woods as Dog was burying some juicy bones. The Storyteller offered to trade him a story for one of his bones to use in a soup. Dog liked the story so much, he began following him around and eventually settled down to live with him. However, he concedes that he is no one's pet and admits that he is his own boss.