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)