Continuity mistake: When Quacker shows Jerry the picture of the ugly duckling in his book, you can see the book is standing up, but when we see the picture in the next shot, the book is lying flat on the ground.
Continuity mistake: When Quacker walks off with the female duckling at the end of the cartoon, the female duckling's hat and umbrella are pink but in the next shot they are now blue.
Continuity mistake: When Tom is searching for Quacker, you can see that he is holding a fork in his right hand, but when he finds Quacker in a sandwich, the fork has disappeared.
