Mel Blanc

Porky Pig / Grasshopper / Turtle / Al Jolson / Janitor / Dog / Flea Circus Dog (voice)

Dave Barry

Various (voice) (uncredited)

Stan Freberg

Fox (voice) (uncredited)

Dorothy Lloyd

Various (voice) (uncredited)

Cliff Nazarro

Various (voice) (uncredited)

John Woodburry

Sinatra and Crosby birds (singing) (uncredited)

Friz Freleng