Réalisation: Sam Wood
Les inénarrables Marx vont tenter de sauver un sanatorium de la faillite grâce à l'embauche du fameux Dr Hacknebush (Groucho), vétérinaire pour chevaux...
Groucho Marx
Dr. Hugo Z. Hackenbush
Chico Marx
Tony
Harpo Marx
Stuffy
Allan Jones
Gil Stewart
Maureen O'Sullivan
Judy Standish
Margaret Dumont
Emily Upjohn
Sig Ruman
Dr. Leopold X. Steinberg
Leonard Ceeley
Whitmore
Douglass Dumbrille
Morgan
Esther Muir
'Flo' Marlowe
Robert Middlemass
Sheriff
Vivien Fay
Specialty Dancer
Ivie Anderson
Specialty Singer
Gino Corrado
Man Boarding Bus (uncredited)
Bess Flowers
Racetrack Spectator (uncredited)
Bert Moorhouse
Racetrack Spectator (uncredited)
Frank O'Connor
Racetrack Guard (uncredited)
Carole Landis
Party Guest (uncredited)
Etta Moten
Black Singer (uncredited)
Dorothy Dandridge
Singer (uncredited)
