The Karnival Kid

Besides providing Disney with consistent musical soundtracks for the "Silly Symphony" cartoons, Stalling provided Mickey Mouse's-and film animation's-first words ever said on the screen. In July 1929's "The Karnival Kid," Mickey (Stalling) barks out "Hot dogs, hot dogs" during the first few minutes of the cartoon while selling his food from a cart. He later sees Minnie Mouse at the carnival, and gives a series of commands to his animated hot dogs to impress her. Minnie is heard giving the hot dogs' names, her voice spoken by Walt.

"The Karnival Kid" was Mickey's ninth installment. His appearances before his first speaking role consisted of whistles, laughing and cackling, but never was he heard using the English language. Disney's distribution company for the Mickey series, Celebrity Pictures, and its owner, Pat Powers, was initially against the mouse speaking, fearing that overseas sales would be dampened by those who didn't understand English. For the Disney animators, contorting their characters' mouths were of an enormous challenge. Drawing how a face looks, especially on animals, was a new style for them to translate onto paper. The artists eventually nailed down the expressions to make them realistic to their viewers.

"The Karnival Kid" later gave costume designer Roy Williams the idea to pattern Mickey Mouse Club members' hats with ears after a scene showing Mickey tipping the top of his head to introduce himself to Minnie Mouse.