Watch Heathcliff (1980–1984) full episodes online.
Synopsis: Heathcliff is an animated series based on George Gately's daily comic strip. Heathcliff, a bad-tempered cat, gets into various battles and adventures with Spike, the neighborhood bulldog, and with a gang of alley cats led by Heathcliff's rival, Riff-Raff.
Stars: Mel Blanc, Henry Corden, June Foray
More information: IMDB, Wikipedia