Continuity mistake: When the captain lifts the lid and finds that Jerry has been eating his pancakes, you can see there is a knife behind the plate, but when we see a close-up of Jerry in the next shot, the knife has disappeared.
Continuity mistake: When Sam confronts Bugs underneath the box with the cord, you can see that there is nothing above the words "Pull", but in the next shot the words "Bomb Release" suddenly appear.
Continuity mistake: When Tom (dressed as a seal) performs "Yankee Doodle" on the horns at the circus at the end of the cartoon, the background behind him changes between shots.
Revealing mistake: The Cliffhanger Ending of Chapter Three has Commando Cody trapped in a van that the villains jump out of before before the van goes off a cliff. As the van approaches the cliff there is a driver-eye view, you can see tire tracks from other takes of this scene. (00:46:50)
Continuity mistake: When Daffy Duck is on the windowsill at Porky Pig's house, the windows are initially misted, but in the next shot they are now perfectly clear.
Other mistake: In the opening credits, Lloyd Vaughan's surname is misspelt as "Vaughn."
Factual error: In Danny Kaye's song about "The Emperor's New Clothes" he persistently and repeatedly uses the words "the king is in the altogether." Hans Christian Andersen lived from 1805 to 1875, but the expression "in the altogether", meaning naked, was invented and popularised by George Du Maurier in his novel "Trilby" which was not published until 1894.
Continuity mistake: When Daffy Duck is printing fake rabbit tracks at the beginning of the cartoon, he puts two tracks next to Bugs Bunny's hole. But when Elmer Fudd arrives at the hole, the two tracks have disappeared.
Continuity mistake: When we first see Bugs' home at the beginning of the short, there are four carrot ends around the hole. When the oil tycoon and Maverick approach Bugs' home later on, there are now only two carrot ends.
Continuity mistake: Mickey Mouse uses an axe to cut down a tree for Christmas. Each chop he makes is horizontal, but when the tree falls over, the lower part of the trunk comes to a point, and the stump remaining in the ground has disappeared.
Continuity mistake: In a close-up of Wile E Coyote's card, the card has "Wile E Coyote Genius" written on it, although in the previous shot the card was completely blank.
Continuity mistake: When the bandit takes Droopy's wallet, he empties the contents and finds a photo of Droopy's girl. At this point, you can see the bandit is holding the photo with two hands, but when we see a close-up of the photo in the next shot, he is holding it with only his right hand.
Continuity mistake: When the large hunting dog comes up to Bugs in his fox's costume, Bugs is holding a carrot in his left hand. But when he points his hand to tell the dog where the other hunting dogs went to, the carrot has gone.
Other mistake: When Sylvester is looking in the mirror whilst trying on hats, one of the hats has a price tag on it which reads $105.95. However, you can see the price numbering is the right way round - it should be back to front.
Continuity mistake: When Pluto sniffs his birthday cake, you can see that there is nothing next to the cake, but a couple of shots later two plates have suddenly appeared.
Continuity mistake: During the final parade, the amount of balloons around the lady suddenly increases between shots.
Continuity mistake: When the delivery van arrives at Granny's house, the gate initially has nothing on it but in the next shot a handle has appeared.
Continuity mistake: When the Coyote is pursuing the Road Runner at the start of the cartoon, he is holding a fork in his left hand and a knife in his right. But when we see the Coyote a few seconds later, he is now holding the knife in his left and the fork in his right.
Continuity mistake: When the three kittens see Jerry in the drawer, behind Jerry on the table there is a book stand and at the end there are two yellow books. In the next shot, one of the yellow books has changed colour to blue, and in the shot after that, there are two yellow books again.
Continuity mistake: When Jerry is removing the nail from Spike's foot with a hammer, the distance of the wall behind Spike changes between shots.