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: 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: 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: When Von Hamburger shows the producer the completed reel, it has a green spool and he puts it by the side of the producer's desk. Daffy then replaces it with his own film and you can see that the spool is light blue. The spool then becomes green again in the next shot.
Audio problem: Shirley Temple is singing a medley of songs when she hits a block of wood with a stick. The sound effects are obviously not synchronized with Shirley's motions. (00:55:55)
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: Near the beginning, Cratchit drops his hat while getting hit by snowballs. In the other angle, his hat is back on instantly.