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.
Continuity mistake: The postman hangs his bag to the hook on the wall. By the noise, he knows a split-second in advance that an explosion is about to happen, and ducks. The actor ducks out of view; we are not supposed to notice that once he disappears, film editing inserts the part when the background partially detonates. We however do, because the bag in the foreground changes position in the space of a single frame. (00:05:25)
Continuity mistake: When the wolf tells the plastic surgeon to change his droopy face back to his usual face, the surgeon has a bald spot with a moustache. When the surgeon gives the wolf a mirror to see his new look, the surgeon is now completely bald and the moustache has gone.
Continuity mistake: The Cadillac limo changes models at times, also having blackwall or whitewall tires.
Continuity mistake: In a wide shot of the corridor when Bugs is running away from the red monster, you can see there is nothing on the wall by the door. When Bugs runs into the door, two wooden beams have appeared.
Continuity mistake: Johnny and Toby are heading to a frog pond. Johnny stops by a fence and considers taking a shortcut through the pasture until Toby warns him of the bull in the pasture. When the two boys turn around, the fence is suddenly several feet away.
Continuity mistake: When Daffy realises he's Duck Twacy, he breaks the two telephones on his desk. But when we see the telephones in the next shot, they are now completely intact.
Continuity mistake: When Bugs Bunny is eating a carrot while standing by a table at Elmer Fudd's laboratory, you can see there is nothing in front of him, but in the next shot Elmer appears out of nowhere.