Continuity mistake: When Calvin Q. Calculus has invented the portable hole, he says "Eureka!" and you can that there is a beaker on the desk, but in the next shot the beaker has disappeared.
Continuity mistake: When Butch and the other cats tiptoe past Spike at the start of the cartoon, you can see that Spike's bone is next to his kennel, but when Jerry is thrown out of the house by the cats before the film begins, he lands in Spike's mouth and the bone is now next to Spike.
Continuity mistake: When Oliver is laughing after Stan tossed the woman's bucket in the street, the top of Oliver's coat and his bowler hat are covered in snow. In the next shot, the snow has disappeared.
Continuity mistake: When the judge gives Woody his money after he won the championship play-off, the notes on the top of the two left piles have nothing written on them, but when we see a close-up of Woody in the next shot, dollar symbols have 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 Bugs is humming "Sweet Georgia Brown" while Sam is being beaten up in the Club Car, there are four metal bars and a brake wheel next to him, but when Sam appears groggily from the Club Car in the next shot, the bars and wheel have disappeared.
Continuity mistake: In the overheard view of the dog grooming the cat, you can see there is nothing beside them, but in the next shot a blue ribbon suddenly appears.
Continuity mistake: When we first see the concert hall at Giovanni Jones's concert, you can see that there is nothing on the left of the hall, but when Giovanni appears on the stage, a tree in a pot has appeared.
Continuity mistake: When Bugs Bunny goes into his changing room, the handle is on the left hand side of the door but in the next shot it is on left hand side whereas it should be on the right.
Continuity mistake: When the shoemaker tells the elf how he can run his business without elves, the paperwork behind the elf changes position between shots.
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.
Continuity mistake: When Elmer Fuddstone appears from his cave, there is a sign saying "Elmer Fuddstone" which was not in the previous shot.
Continuity mistake: When Sam is going to the widow's house, he is carrying a box of chocolates and a bunch of flowers, but when he arrives at the door, the chocolates have disappeared and the flowers are completely different.
Continuity mistake: When Sylvester has caught all of Speedy's friends, he puts them in the bottle and he is holding the flute in his hand. But when see Sylvester a little later on, the flute has gone, and after Speedy has rescued one of his friends, Sylvester has the flute again.
Continuity mistake: When Bugs hides in the hole from Elmer, he puts the cow skull over the hole. Elmer then takes away the skull and then puts his head in the hole. At this point, you can see that the background is a desert, but when Elmer takes his head out of the hole, it has changed to a cliff. The background goes back to a desert when Bugs appears in the next shot.
Continuity mistake: Before Tom is about to draw a line on the alarm clock on the blueprint, you can see on the left hand side of the clock there is an "A" and an arrow, and on the right hand side is some writing. When Tom draws the line, the "A", arrow and writing have all disappeared.
Continuity mistake: When Bugs Bunny says "Watch your blood pressure, chubby!" to Göring, the medals on Göring's lederhosen change between shots.
Continuity mistake: When Bugs is climbing up the ladder, you can see that he has a toothbrush in his right hand, but when he enters the rocket ship, the toothbrush has disappeared.
Continuity mistake: When Daffy (dressed as Bugs) is fishing at the pier, there is a can beside him that keeps disappearing and re-appearing between shots.
Continuity mistake: After Tom says goodbye to his friends, he goes to sleep on the window ledge. At this point, you can see it's night time, but when we see him sleeping from inside the house in the next shot, it is daylight outside.