Trivia: This was the first cartoon in which Wile E. Coyote had a speaking role.
Continuity mistake: When Bugs says to Wile E. Coyote, "We mailed you people a check last week!", he slams the door in Wile E.'s face. You can see that Bugs is standing by the elevator hole when he slams the door, but in the next shot he is standing on the hole and going back down to his home.