The Great Rupert (1950)

Synopsis
Jimmy Durante plays the patriarch of a down-on-their-luck family of acrobats, who suddenly finds a great deal of money hidden in his house amid the depths of the Great Depression. The authorities suspect Durante of being a thief, but in fact the culprit is a benevolent little squirrel named Rupert. This clever critter has been pilfering money from the obnoxious, wealthy miser who lives in the adjoining house and who decided to stash most of his funds in the wall separating the two residences. The stop-motion animation is the handiwork of George Pal. ~ Hal Erickson, All Movie Guide