The Marx Brothers, Groucho, Chico, Harpo and Zeppo are a group of actors known for Duck Soup (1933), Animal Crackers (1930) Horse Feathers (1932) A Night in Casablanca (1946) A Day at the Races (1937) and A Night at the Opera (1935). They began their careers in Vaudeville, before becoming stars in the movies.