The sixth Hanna-Barbera syndicated cartoon after their departure from MGM starred Peter Potamus (a purple hippopotamus), and his traveling companion So-So (a monkey), who fly back and forth through time in a balloon participating in historic events. Whenever they get into serious enough trouble, as they do in every episode, Peter defeats his enemies with his trademark "Hippo Hurricane Hollar." Other cartoon shorts include, "Breezly and Sneely," and "Yippee, Yappee, and Yahooey."
|Season 1||September 1964||December 1964||14|
|Season 2||September 1965||October 1965||7|
|Season 3||January 1966||February 1966||6|
|Season 1||September 1964||September 1964||3|
This is a list of animated television series produced by Hanna-Barbera Productions (also known as H-B Enterprises, H-B Production Company, and Hanna-Barbera Cartoons).
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