Factual error: During the opening credits, the show's copyright date is shown in Roman numerals as MCLXIV. In Arabic numbers, that's 1164 - it should have been MCMLXIV for 1964.
Continuity mistake: When we see a close-up of the meter, there is a box saying "10 Centavos for One Hour." The words were not in the box in the previous shot.
Continuity mistake: When Daffy is clawed by the bear, he loses his hat in the process. But when we Daffy running in the next shot, the hat is back on his head again.