A 3-D version of this cartoon was produced for General Aniline & Film's (GAF) "View-Master" line in 1972, released in a three-reel package (21 "stereo images").
Bugs' spring footgear was an early forerunner of what would become drywall stilts and Kangaroo shoes.
Bruno the Bear is an obvious parody of Russian-born actor Akim Tamiroff.
Several older elements of a traditional circus are shown, including the "Big Top" tent and a circus band.
The circus was still a popular form of entertainment in the postwar years. Although Ringling Brothers was the most well known, there were scores of other companies traveling all across the world.