Doctor Hugo Hackenbush, Tony, and Stuffy try and save Judy's farm by winning a big race with her horse. There are a few problems. Hackenbush runs a high priced clinic for the wealthy who don't know he actually has a degree in veterinary medicine.
Groucho Marx
as Dr. Hugo Z. Hackenbush
Chico Marx
as Tony
Harpo Marx
as Stuffy
Allan Jones
as Gil Stewart
Maureen O'Sullivan
as Judy Standish
Margaret Dumont
as Emily Upjohn
Sig Ruman
as Dr. Leopold X. Steinberg
Leonard Ceeley
as Whitmore
Douglass Dumbrille
as Morgan
Esther Muir
as 'Flo' Marlowe
Robert Middlemass
as Sheriff
Vivien Fay
as Specialty Dancer
