Director Tex Avery was famous for his off the wall cartoons, which were aimed more toward adult audiences than children. Here, however, he pushed the limits of what was considered acceptable, and in several places the film was toned down in order to satisfy the U. S. censors. Original copies were kept and stored away. Shortly afterwards, the army visited MGM studio to view a propaganda movie. Upon seeing this cartoon, they requested (and received) special uncut 16mm prints to send to the soldiers overseas.
Throughout the production of this short, the MGM animation department had an ongoing problem with storyboard sketches and even finished cels mysteriously disappearing - appropriated as souvenirs by Red's more brazen admirers.
The original ending had the Wolf married to Grandma and him and his wolf sons cheering Red at the nightclub. Censors disapproved of the suggestion of bestiality in this ending, and so it was changed. The earlier ending exists only in stills.
According to several accounts, upon the opening night of this film, it caused such an acclaim and commotion, that audiences demanded it be played again. The theater personnel were more than glad to oblige.
Top Disney animator Ward Kimball was so impressed by "Red Hot Riding Hood" he called up Tex Avery at MGM to personally congratulate him. Avery probably would have relayed this to Preston Blair, who did the brilliant animation of the title character and was a former colleague of Kimball's at the Disney studio.