Porky and Teabiscuit

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Porky Pig / Porky's Poppa / Grandpa / Horse Trainers / Race Starter (voice) (uncredited)

Joe Twerp

Race Commentator (voice) (uncredited)

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Teabiscuit /Porky's Car (voice) (uncredited)

Earle Hodgins

Auctioneer (voice) (uncredited)