Audio problem: When Bugs hits the key on the right of the booby-trapped key, the tone of the key is different to the one when he hit it first time.
Continuity mistake: When Bugs Bunny is selling his box of cigars, the lid of the box is initially facing west when Yosemite Sam comes along, but a couple of shots later the lid is now facing north.
Trivia: When Bugs is beating his drum, there is a building behind him called "Virgil Ross and Co." Ross was one of the animators for this cartoon.