The Chain Gang is a Mickey Mouse animated film produced in 1930 by Walt Disney for Columbia Pictures. It is one of a group of shorts of strikingly uneven quality produced by Disney immediately after Ub Iwerks left the studio. The cartoon was primarily drawn by Norm Ferguson, and featured a pair of bloodhounds, who helped to track down Mickey after his escape from prison. Although these dogs were not named, the style in which they were drawn makes them clear forerunners of Pluto, who first officially appeared in The Picnic.
Walt Disney Productions. Released on September 5, 1930.