This 30-minute Saturday morning cartoon was produced by Ruby-Spears Productions and aired a total of 26 episodes. The first season, called "Heathcliff and Dingbat," ran for 13 episodes and included backup segments with Dingbat and the Creeps (who were created specifically for this show). The second season, called "Heathcliff and Marmaduke," ran for 13 episodes and featured backup segments with fellow comic strip character Marmaduke.
The Winslow family goes to watch a rocket launch and the rocket is being piloted by a robot named Bruce when Marmaduke chases a cat into the rocket and it blasts off. Can Bruce the robot keep Marmaduke from messing up the mission and can Marmaduke return to earth to his family?...more+
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