Continuity mistake: When Tom realises he is drinking sea water in the bucket Jerry gave him, he drops the bucket on the towel, but when he spits the water in the girl cat's face, the bucket is nowhere to be seen.
Continuity mistake: When Tom is tip-toeing past the gate at the start of the cartoon, Spike is sleeping and you can see there is nothing around his neck, but in the next shot a dog collar has suddenly appeared.
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 Mickey Mouse leaves the house for his date with Minnie, his cane is hooked at the end but when he leaves the house, the cane is now crystal-topped.
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 fan to help him catch Tweety, he goes up to the cage and finds it is empty. But after a quick cut to Tweety, we return to Thomas and the cage is nowhere to be seen.
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 Jerry dives into the bottle of invisible ink, he dives in head first. When he emerges from the bottle, it is the bottom half of his body that is invisible first.
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 Bugs Bunny crosses the finish line, you can see there is only grass next to the road. But in the next shot, kerbing appears out of nowhere.
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: When Bugs Bunny arrives at the "Dead End Kid's" house, you can see there is nothing in the window, but when he comes to the door in the next shot, a grey object suddenly appears.
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)