Pluto (Disney) was originally created as Dippy Dawg" and "was created as a human character, as opposed to Pluto who was a pet, so [Goofy] walked upright and had a speaking voice". This problem was humorously illustrated in the film "Stand By Me" in which one of the boys ponders, "Mickey's a mouse, Donald's a duck, and Pluto's a dog. What's Goofy?" Also in the series "Funniest Pets & People" a dog "mentions" why couldn't he have pants because Goofy was a dog and had pants. There is also an episode of the Disney Channel series "Even Stevens" called "Scrub Day" wherein
Dippy (London) The original presentation of the cast was altered several times to reflect changes in scientific opinion on the animal's stance. The head and neck were originally posed in a downwards position, and were later moved to a more horizontal position in the 1960s. Dippy was removed from the Reptile Gallery in 1979 and repositioned as the centrepiece of the main central hall of the museum, later renamed the Hintze Hall in recognition of a large donation by Michael Hintze. Dippy replaced a mounted African elephant, nicknamed George, which had been on display as the central exhibit in the main hall