Trivia: The "Evil Scientist" in this cartoon is a caricature of the actor Peter Lorre.
Continuity mistake: When the scientist locks the door to prevent Bugs from escaping, you can see the latches are made of metal, but in the next shot they are now made of wood.
Bugs Bunny: Is there a doctor in the house? Is there a doctor in the house?
Doctor in audience: I'm a doctor.
Bugs Bunny: Eh, what's up, doc?