Continuity mistake: When the hunter is holding the piece of paper that was in the satchel at the end of the cartoon, you can see that his left hand is on the side of the paper, but in the next shot it is now on the corner.
Continuity mistake: When Donald sees the "reward" poster with a picture of him on the telegraph pole, you can see that the last two zeros of the reward have two lines under them, but when Donald starts tearing off the posters, there is now only one line.
Continuity mistake: Throughout the cartoon, watch the handkerchief in the store manager's top pocket of his jacket. In some shots it is in the pocket; others it isn't.
Continuity mistake: When we see Droopy gambling at the fruit machine, you can see the fruits have nothing around them but in the next shot a pattern suddenly appears.
Continuity mistake: When Screwy squashes the truant officer's nose with a mallet, the nose jumps off in pain and then hides under the officer's face. At this point, the truant officer is wearing a hat on his head, but in the next shot the hat has disappeared.