Muttley is a fictional dog created in 1968 by Hanna-Barbera Productions; he was originally voiced by Don Messick. He is the sidekick to the cartoon villain Dick Dastardly, and appeared with him in the 1968 television series Wacky Races and its 1969 spinoff, Dastardly and Muttley in Their Flying Machines. The character is known best for his mischievous, rasping laugh.

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