Continuity mistake: When Dr. Sawyer is giving Kris the exam, during the part where Kris is doing the physical coordination test, we see Kris from Sawyer's point of view, and Sawyer is drumming his fingers. When the shot switches to Kris's, he is fingering his eyebrow. When it switches back, fingers drumming. Finally, when it switches back again, his hands are neatly folded in front of him.
Continuity mistake: Pinkie sweeps all the glasses on top of the bar onto the floor, yet after he and his gang have gone we see broken glass on the bar top.
Continuity mistake: To show time has passed, the wooden fence on the beach deteriorates, but the top of the fence, with Anna Muir carved in it, was never anywhere near the water - it was way up inland, far away from the water's edge - but now it is in the water, waves washing over it.
Continuity mistake: The school house says "Or would you rather be a fish?" as Lulu plummets into the water around the letter blocks the school house is sitting on. She lands in the water next to two blocks reading F and C, the F block being a light blue and the C block being a slightly darker blue. But when it cuts to a close up of her in the water, both blocks are suddenly a very dark blue. (00:05:15)
Continuity mistake: In the scene where we see two pilots in the cockpit of a aircraft, the co-pilot has a fake moustache. The top lip appears to be coloured black.
Continuity mistake: After Tom is sobered up by water, you can see behind him there is a bottle of seltzer in the refrigerator, but when Jerry comes along with a chicken drumstick in the next shot, the bottle has disappeared.
Continuity mistake: When Dudley drafts the sermon he says "you give me a tie, I give you a book." When the bishop reads the sermon he says "you give me a book, I give you a tie."
Continuity mistake: When Pluto is by the radio in the music shop, there is a record player behind him which has three buttons on the side, but in the next shot the buttons have moved a few inches to the right.
Continuity mistake: When the cat places the tiny canary on to the plate, the salt and pepper pots on the table change positions between shots, and the cabinets in the background disappear. He also has a knife and fork in his hands, but after the canary says he's been sick, we return to the cat and the knife and fork have disappeared.
Continuity mistake: When the mouse pulls the lion's tail in the jungle, there is a tree in the background. When the camera closes in on the mouse in the next shot, the tree has gone, and in the shot after that, it is back again.
Continuity mistake: When Thomas uses a fishing rod to hoist himself up to Tweety's cage, you can see that Tweety is resting himself with his arm on the swing. But when we see Tweety in the next shot, his arm is on his chest.
Continuity mistake: When Bugs Bunny tells Cecil Turtle to simmer down, he is wearing his towel around his ears, but when Cecil tells Bugs he can beat him, Bugs is no longer wearing his towel.
Continuity mistake: When Jerry replaces two keys on the piano with a mousetrap, Tom gets his finger caught and there is a catch lever at the bottom of the trap. But in the next shot when Tom pulls up the mousetrap and his finger expands, the catch lever has disappeared.
Continuity mistake: When Bugs Bunny falls into the trap that Elmer Fudd prepared for him, you can see that the lump of dirt next to the hole has nothing in it, but when Elmer fills up the hole with water in the next shot, a trowel has suddenly appeared.
Continuity mistake: Pearl is singing a song to mock her boss at the factory. She goes through the first lines about being too worn out "to play." With her feet on the work table, she puts her hand under her chin. In the background, a fellow seamstress is watching. In the next shot, her arms changed position, now crossed in contrast to the previous shot. (00:04:40)
Continuity mistake: When Robert Taylor escapes from the asylum, and is driving the second car he steals, the car is shown at least once with windshield wipers pivoting from above the windshield, then shown with the wipers pivoting from below the windshield. Clearly, these are two different cars. I think the studio borrowed wiper footage from the scene in which he is driving the first stolen car, to use at moments in the scene in which he is driving in the second car.
Continuity mistake: Bob Hope asks to take a peek at the execution chamber. He peeps from the hole, nudging away the lid with his forehead, and turns away. The lid came to a complete stop, but in the next shot when Ronnie walks away here's the lid swaying again as if he had moved his head from the window just that moment. (00:02:25)
Continuity mistake: In the scene when Jerry is hiding in the oven and Tom and Butch turn on the gas, the part on the right hand side of the oven keeps changing from having four holes to three holes between shots.
Continuity mistake: In the scene towards the very end of the film when Sister Ruth goes to see Mr. Dean, she is wearing a great deal of lipstick - in fact, her make-up is indicative of her having left the religious order run by Sister Clodagh. She becomes hysterical and faints. When she wakes up she's no longer wearing any lipstick (no indeed any make-up at all).
Continuity mistake: Bongo the bear, riding in a car of the circus train, looks out the window. There are four vertical bars on the window - but when seen from outside the train, it has six bars.