Cat Carson Rides Again (1952)

The mice are having their after-hours way with a feast from the Free-Lunch counter in a western saloon when the dreaded-and-feared Cat Carson, aka Katip, shows up and starts a reign of terror in the wild west. But Herman, the city-slicker cousin of the western-rodents shows up, rescues his kin from the clutches of Cat Carson, and then goes to work on the villain himself.