Two cockney canines chase Sylvester Cat into the lab of Dr. Jerkyl, where the cat drinks Hyde formula...
Mel Blanc
Sylvester / Alfie (voice)
Stan Freberg
Chester (voice) (uncredited)
Friz Freleng
Director
Warren Foster
Story
Edward Selzer
Producer
Carl W. Stalling
Music Director
Milt Franklyn
Orchestrator
Treg Brown
Sound Effects Editor
Irv Wyner
Background Designer
Arthur Davis
Animation
Manuel Perez
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