Continuity mistake: Before Wile E. Coyote is about to put the blanket into the stewing pot, you can see there are bones beside the huge rock next to him. But when we see Wile E. Coyote in the stewing pot after he fell into it, the bones are nowhere to be seen.
Continuity mistake: When Yosemite Sam sends out robot ZX29B to capture Bugs Bunny, the robot hides by some dustbins by the dump and you can see there are two dustbins by him. When Bugs empties his rubbish into the robot, the two dustbins have disappeared, and when robot ZX29B coughs up the rubbish in the next shot, they are back again.
Continuity mistake: When Marchello is on a rooftop restaurant before opening time he is trying to type something as a journalist but he keeps getting distracted, so he asks the girl who works there to turn the jukebox off, which she does by pulling something from behind it, like the power cord. When he asks to have it turned back on, the girl just presses something simple in the front, instead of at the back, which she should have done.
Continuity mistake: When Palfrey is being shown the Austin Healey, the salesman lets him in on the passenger side and he slides across to the driver's seat. In the next shot the salesman is standing on the driver's side.
Continuity mistake: When Dr Jekyll enters his laboratory at the start of the cartoon, he locks the door with his key. After drinking the Hyde Formula, he turns into Mr Hyde for a short time before going back to Dr Jekyll. When Jekyll leaves the laboratory, he opens the door without unlocking it.
Continuity mistake: The first time you see "No Sale" written in lipstick on a big mirror by Elizabeth Taylor, the "o" in "No" is partially formed. The next time you see the mirror, the letter "o" has been filled in and completed.
Continuity mistake: When the boiler explodes, Robert Stack runs into his daughter's bedroom, looks down the big hole and the cabin below has nobody in it. He tries to save his daughter and the camera angle shows someone lying on the floor next to the hole. Looks down for the third time, and the person lying on the floor is gone again.
Continuity mistake: In the first elevator scene, when Shirley MacLaine calls the floor number (19), between her, Jack Lemmon and the wall there are a man with a fedora reading the New York Times, and a woman with a turban. When the elevator doors open and people come out of the cabin, the woman is nowhere to be seen. (00:17:05)
Continuity mistake: When Sam says "Salt? Why didn't you say so?" at the dinner table, you can see there is a knife next to his plate, but when he leaves his chair to take the salt shaker to Bugs, the knife has disappeared.