Curly Howard had suffered a series of strokes in 1945 that forced him to leave the team. His cameo (as the man asleep on the train - with long hair and a clothespin on his nose) was intended by brother Moe Howard as a morale booster, but Curly never made another movie.
The first appearance of the updated, faster version of "Three Blind Mice", arranged by 'Lyle Spud Murphy'. With minor updates, it was used until their final shorts in 1959.
In one scene, The Three Stooges are sitting in front of a lion. If looked at closely, it can be noticed that there is a glare behind them. There was a sheet of glass put up between them and the lion for the scene's shooting. Even though the lion was old, docile, and tame, Shemp Howard panicked and refused to do the scene. As a result, the glass was put up to separate them from the lion.
The lion used in this short is Tanner, the same lion used in the color Metro-Goldwyn-Mayer logos from 1934-1956 and in some early 1960s Tom and Jerry cartoons.
The only short of The Three Stooges to feature all three Howard brothers - Moe Howard, Curly Howard and Shemp Howard - together. However, they did appear in the 1930 Ted Healy Stooge movie, Soup to Nuts (1930).