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This article is about the Looney Tunes character. For the robot dog on Doctor Who, see K-9 (Doctor Who).

K-9 in Haredevil Hare
First appearance Haredevil Hare (1948)
Created by Tex Avery and Bob Clampett
Voiced by Frank Welker (Duck Dodgers)

K-9 is a green cartoon Martian dog in the Warner Brother's Looney Tunes series of animated shorts. He is closely associated with Marvin the Martian as K-9 is Marvin's pet dog and sidekick in some Looney Tunes productions. He is based on Pluto Pup from The Walt Disney Company.


K-9 premiered in the short Haredevil Hare where he and his his owner Marvin tried to thwart Bugs Bunny, who had stumbled on the pair's plans to destroy the Earth. He is given his first speaking role in this short, seeming quite unintelligent and gullible. This changes in later shorts where K-9 carries an air of superiority over his owner.

Other appearances

In recent Warner Bros. productions, K-9 only plays small cameo roles in video games and films, such as Sheep, Dog, 'n' Wolf, Space Jam, and the 2003 film Looney Tunes: Back in Action.

K-9 appeared in two episodes of Duck Dodgers, in which he was voiced by Frank Welker.



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