Continuity mistake: If you look carefully at the monster (Frankenstein) you will see that his face is different in the ending scenes. The reason is, during the movie you see the monster take the woman doctor and throw her out the laboratory window. You then see the monster kind of stumble, which he really did and broke his ankle. So in the final scenes they replaced Lon Chaney Jr. as wolfman with a stuntman, and Lon Chaney Jr. finished the movie as the monster.
Visible crew/equipment: During the movie whenever Bob Hope is pulled off the wagon by his team of horses you can see a board leaning against the wagon that was used to help the stunt man when he was pulled off the wagon.
Audio problem: In a scene when the Blandings first move into their dream house, Cary Grant (Jim Blandings) says something to a workman and his lips clearly don't match what is heard.
Continuity mistake: When Sylvester is looking through the dustbins for food at the start of the cartoon, you can see that his dustbin lid has only one scrap of food on it, but when the orange kitten appears in the next shot, there are now two scraps on the lid.
Continuity mistake: When Pluto discovers the baby bird lives in a nest in a tree, the amount of water around the bird changes between shots.
Continuity mistake: When Nibbles launches a candle into Tom's tail, it burns him and turns Tom's fur brown. When we see Tom waving his white flag in surrender after he has crashed into the cabinet, his fur is now blue again.
Continuity mistake: After Donald has planted the dynamite in the anthill, he stops at an area and puts his fingers in his ears. At this point you can see there is nothing surrounding him, but when the dynamite explodes, there are now some small bushes and rocks around Donald.
Continuity mistake: When Chip slides down the drainpipe and holds on the frame to get to the window of Donald's house, you can see that there is nothing in front of the window, but when Chip is looking into the kitchen in the next shot, a cord has suddenly appeared.
Revealing mistake: When Mr. Peabody is fishing, it is obvious that he is in a boat on the floor of a studio. Rear-screen projection is used to show the ocean behind him, but while he is standing in the boat and trying to reel in his catch, the boat is absolutely motionless.
Continuity mistake: When Tweety hits Sylvester on the paw with a mallet, the background behind Sylvester changes between shots.
Continuity mistake: When Yosemite Sam enters the saloon, there are swinging doors behind him. When he orders "all of you skunks" to "clear outta here", the other cowboys leave but the doors to the saloon have disappeared.
Continuity mistake: When the big dog points his gun towards the hole in the log, the length of the log changes between shots.
Continuity mistake: When Bugs is about to tee off at the first hole at the golf course, the objects behind him change position between shots.