Dr. Cowtiki has thinning black hair, medium gray eyes, and wears brown rectangle-rimmed glasses. His clothing consists of a gray lab coat, white dress shirt, a black neck tie, brown slacks, a black belt, black socks, and black dress shoes.
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- "Up All Night" (First appearance)
- "Food of the Clods"
- "The Day the World Got Really Screwed Up!"
- "A Little Dad'll Do You"