Continuity mistake: During the lunch scene, there is a bowl in front of Goofy on the table that changes colour from blue to red between shots.
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 we see the film producer at his desk at the start of the cartoon, there is a telephone in the corner. But after he sends Daffy out, we cut back to the producer and the telephone is now in front of him.
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.