Other mistake: Clarence tells George that his brother died at the age of 9 because he wasn't there to save him from falling through the ice, but when you see the tomb stone, it shows Harry Bailey was born in 1911 and died in 1919. That would make Harry only 7 or 8 years old.
Other mistake: Marlowe fires several shots at Art Huck and Lash Canino but if you look at the chamber when he takes the gun out from under the dashboard, there are no bullets in it. (01:41:45)
Revealing mistake: When John Garfield is trying to stop Lana Turner from calling the District Attorney, Garfield holds the receiver up in the air off the hook. Then the phone rings. But a phone cannot ring when it is off the hook.
Continuity mistake: In the penultimate scene when Susan has just gotten off the train and is running to Ned Trent, you see her fall over flat on her face and then sit up. Cut to the close up where Ned has also fallen over, Susan is flat on her face again. (01:36:00)
Continuity mistake: At her house and at the fair, Daisy's bangle bracelet repeatedly disappears then reappears and changes wrists as well.
Factual error: Tombstone is nowhere near Monument Valley.
Continuity mistake: Watch Devlin's hands in the cafe in Rio. They open and close between shots.
Revealing mistake: When Ballin's plane flies and finally crashes, it becomes obvious that the horizon is a still image with the film of the explosion superimposed directly onto it.
Visible crew/equipment: When Fred kisses Peggy, a boom mic is reflected in the left side of the car.
Continuity mistake: When Spike goes back inside his kennel to beat up Tom, you can see a dish beside it, but when we see the kennel in the next shot, the dish has gone.
Continuity mistake: Screwy Squirrel puts some glue on the floor and Lenny treads on the glue, ripping off his paws in the process. At this point, you can see Lenny is in bare feet, but when he is walking a few seconds later, his paws are back on his feet again.
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: When Butch is chasing Tom, Tom puts a flowerpot on a swing which crashes into Butch and it leaves earth on the floor. But when Butch uses a guitar to spank Tom when he comes down on the swing, the earth has completely disappeared.
Continuity mistake: The mattress on Rocky's bed is coloured red, but when Bugs helps Rocky put on his tie, the mattress now has red and white stripes on it.
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 Bugs Bunny is preparing a solution for the bear, there is a silver tray in front of him that disappears in the next shot.
Revealing mistake: Just before she KOs the lecherous producer, Peggy Harper gives him a big stomp on his right foot. Or that's what it was supposed to look like because the adorable Betty Hutton just slams her foot on the floor at a very safe distance from Howard Freeman's. (00:24:15)
Continuity mistake: The front door to Porky's house is coloured white, but when the door is opened in some shots, it changes to yellow.
Continuity mistake: When Elmer and Bugs fall off the cliff, Bugs takes a bottle of "Hare Tonic" and you can see he has the bottle in his hand when he drinks the tonic. When Bugs grinds to a halt, the bottle has disappeared.
Continuity mistake: When the convict trips outside the plastic surgeon's office, the sign on the window reads "plastic surgery" which changes to "plastic surgeon" in the very next shot.