From Muppet Wiki

Muppy is a shaggy, white dog who is Muppet Theater owner J.P. Grosse's favorite pet. His most prominent appearance was his debut on episode 101 of The Muppet Show, in which he used his connections to pressure Kermit into giving him his own act, his own dressing room, and star billing. He even drinks Kermit's milk. But when he demanded that the name of the show be changed to The Muppy Show, Kermit finally cancelled his act. Afterwards, Muppy was almost exclusively relegated to background appearances.

The puppet was designed to closely resemble a live dog that was used to portray the character in long shots (going up and down the stairs backstage, for example). The same effect would be used in later seasons with another Muppet dog, Foo-Foo. Muppy was given bulging eyes for the "Pass That Peace Pipe," the UK Spot on episode 414.

The original "fluffy white dog" puppet was Rufus, who was originally built for the mid-60s pilot The Land of Tinkerdee, and later used in Hey Cinderella! and The Muppets Valentine Show. The puppet was rebuilt for The Muppet Show with a more realistic looking face.

Filmography

Book Appearances

• The Muppet Show Book