Continuity mistake: In one of the early scenes where Baby, the pet leopard is introduced, you can tell that the scene was shot twice and overlapped. Baby's leash has an obvious gap in it, and the two halves move independently.
Continuity mistake: In a sequence on London Transport's Chiswick skidpan a three axle LT class AEC Renown bus turns into a two axle STL AEC Regent while on the move, then back into an LT when parked.
Continuity mistake: When Jimmy Stewart is talking to his girlfriend, he gives her a flower, and at different points in the conversation, she has it over her shoulder, or on her lap, depending on the angle of the shot.
Continuity mistake: When Porky is lighting the candles on the cake at the beginning of the cartoon, the position of the candles change between shots.
Continuity mistake: When filming begins of the romantic scene between the rooster and hen, the two drop their hats behind them on the ground. But in a full length view of Daffy kissing the hen, the hats have disappeared.
Continuity mistake: Mr. Kilbourne sits at the breakfast table and asks for his newspaper; during the scene the tea strainer to his right is facing upwards in the wider shots, and pointed with the opening down on the table in the close-ups. (00:04:30)
Continuity mistake: When the waiter tells Groucho that he wants a part on the play, his right arm is extended and the left one is bent next to his chest. Shot changes and both arms are lowered.
Continuity mistake: When the St Bernard dog is preparing the drink for the frozen bird, he puts a cocktail stick with a piece of orange and a cherry into the glass, but when we see the dog holding the glass in the next shot, the cocktail stick has disappeared.
Continuity mistake: At the beginning of the short, Mickey Mouse installs the ship's mast. But when we see the boat when it is completed, there is no mast.
Continuity mistake: While he's talking to Benson in the hospital corridor, Law's handkerchief keeps changing positions in his coat pocket from one take to the next (tucked almost all the way in, then sticking up several inches, etc.).
Continuity mistake: A sow is nursing four little pigs. When the farmer brings food, she rises and walks away, leaving behind five little pigs.
Continuity mistake: The car at the beginning of the movie stops, and one of the officers exits it to open the door to Mrs. Reardon. The movements of the policeman are in continuity between shots, but the extras on the sidewalk completely change. (00:01:00)