Random surreal observation of the day: Arthur

Today on Arthur, his friend Buster (who is a rabbit) needed to fill in and do magic for the kindergarten class because the real magician couldn't find his rabbit (presumably from the hat). It's like Pluto on Mickey Mouse. Why do all the other animals get to walk and talk (not to mention other dogs), but he's stuck walking on four legs and barking? Shows that feature animals as "people" need to be more consistent.