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 Jerry hears the door bell, he puts the magazine he is reading on his chair. But when Nibbles attempts to take the cheese off the mousetrap, the magazine has disappeared.
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: At the 18th hole, Bugs digs a channel to allow the ball to roll into the hole to enable him to win. But when MacRory's accuses Bugs of cheating, the channel has now gone.
Continuity mistake: When Sylvester and the dog are fighting in the cage, Tweety rushes out of the door to see them and he is initially standing well away from the door mat, but in the next shot he has moved a few inches back.
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.
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 Elmer catches Sylvester breaking his dishes, Elmer's position changes between shots.
Continuity mistake: While fishing, Mr. Peabody hooks a mermaid who is swimming underwater. When he reels her in and she leans over the edge of the boat, her hair is completely dry and perfectly coiffed.
Continuity mistake: When the big dog points his gun towards the hole in the log, the length of the log changes between shots.