Hoppy, the new pet that Barney and Betty got for Bamm Bamm, causes major havoc and nearly ends Barney's friendship with Fred.
Cast Appearances

Alan Reed
voices Fred Flintstone
Don Messick
voices Bamm-Bamm Rubble
Jean Vander Pyl
voices Wilma Flintstone
Mel Blanc
voices Barney Rubble
Gerry Johnson
voices Betty RubbleEpisode Discussion
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