Continuity mistake: After the dogcatcher, Mr. Cluge, takes Puppy Paws to the dog pound, he unfastens the dog's collar and hangs it on a peg on the wall. The next time the collar is shown, it is fastened again.
Continuity mistake: During the final scene of the Nativity, when the baby is born, look at the boy to the right of Mary, he is tipping the candle upside down. When the camera changes shots, he has now got the candle in his mouth.