Plot hole: When Iris Henderson and her two friends arrive at the hotel, Iris orders dinner and asks that it be sent up to "our" room. The waiter arrives when the three are changing. But later, when it's time for bed, Iris says good night to her friends, who leave her alone in the room (as she must be for the sake of subsequent developments).
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 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: A sow is nursing four little pigs. When the farmer brings food, she rises and walks away, leaving behind five little pigs.