Marmaduke and Heathcliff

Heathcliff is an animated TV series that debuted on October 4, 1980. It was the first series based on the Heathcliff comic strip and was produced by Ruby-Spears Productions. It ran until September 18, 1982 with a total of 26 episodes, under two different names. The second season is also called Heathcliff and Marmaduke that ran for 13 episodes and featured backup segments with fellow comic strip character Marmaduke the Great Dane.

The cartoon show features the voices of Mel Blanc as Heathcliff. June Foray as Sonja, Heathcliff's girlfriend. And Paul Winchell as Marmaduke.