Continuity mistake: When the inebriated cuckoo pops out of the cuckoo clock at the beginning of the short, his feet are yellow, but when we see a close-up of the cuckoo in the next shot, his feet are now orange.
Continuity mistake: After Bugs shoots the man in the audience for coughing, the style of notes in the music book in front of him changes between shots.
Continuity mistake: When we see Toodles in the window of her bedroom, the shutters have nothing on them, but in a close-up in the next shot, hooks have suddenly appeared.
Continuity mistake: The handle that Bugs uses to try to escape was originally not on the door which the scientist locked up when Bugs entered the castle.
Continuity mistake: When Bugs drills a hole in the hotel floorboard, he puts on a nightcap and descends into the hole. But when he emerges from the hole a little later on, he is now wearing a nightshirt.
Audio problem: When Elmer Fudd says "You scoundrel!" to the bear, you can see Elmer's mouth moving after he has finished speaking.
Continuity mistake: When Daffy sneaks through the entrance gate, pretending to be an Academy Award, there is nothing on the wall by the security guard's hut. When Daffy tells the guard that "J.L. Is waiting", we cut back to the guard and there is now a door containing a push button box.
Continuity mistake: When Tom picks up a telephone book, you can see he is holding the book with both hands, but when we see a close-up of the "Ajax Mouse Exterminators" in the next shot, his hands are nowhere to be seen.
Continuity mistake: When we see the cats lounging around, the bottle the drunken cat is holding has nothing on the label, but in the next shot it now reads "Arsenic and Old Grapes."
Continuity mistake: When Elmer is chasing Bugs at the beginning of the cartoon, the ground is white, but when Bugs comes out of the log and pushes it over the cliff, the ground is green.
Factual error: When the camera pans to the theatre right after the opening credits, the sign uses the British spelling of "theatre" instead of the American "theater."
Audio problem: When Bugs says "That's the old ginger, boy!" when practising with his baseball bat, his mouth doesn't move.