Continuity mistake: When the bogus male nurse with Mrs. Carroon is outside in the rain, his coat and hair are soaking wet. But when they run to the staff entrance (a few seconds later), his hair and coat are bone dry.
Continuity mistake: When Tom is running away from Uncle Pecos, he runs into the house and slams the door. When he slams the door, you can see the little door at the top has nothing on it, but in the next shot a handle has suddenly appeared.
Continuity mistake: Wallis is showing his idea to the doctor and draws on the sketch of the dam. Shortly after, he shows the doctor the same sketch again and the middle line we saw Wallis draw has now changed position. (00:06:40 - 00:07:50)
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: Park Ranger Donald is leading five bears to a cave, so they can hibernate for the winter. He finds a bear sleeping in a hammock and forces him to join the others. There should now be six bears but a seventh bear has appeared out of nowhere. Later in the cave, their number has grown to nine.
Continuity mistake: During the fight in the garage when Larry is fighting the two thugs a calendar on the wall shows the month of August, the next day Turk has a poster for the next stock car meeting on the 14TH May 1955 the duration of this film is not that long.
Continuity mistake: When Bugs is horrified to realise that he was holding a picket sign, the yellow paint on his tail disappears briefly.
Continuity mistake: When Jervis returns Julie to her suite after a night of dancing, he picks up a morning paper, reads some excerpts from it, then says goodnight to her. As she opens the door, all he has in his hands is his boater, no newspaper, and in the following long shot, no paper is visible anywhere.
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 Hippety Hopper breaks his crate apart on the rocks, you can see there are pieces of crate on the ground, but when we see Hippety in the next shot, the pieces have disappeared.
Continuity mistake: When the stork takes the baby to Mr and Mrs Pierce, he is holding the bag in his left hand when he walks up the stairs, but when he arrives at the flat, the bag is now in his right hand.
Continuity mistake: After Tom kicks Jerry out of the house again, Jerry lands in Spike's mouth and then opens Spike's eyelid. When this happens, the position of Spike's left arm changes between shots.
Continuity mistake: When we first see the book that Bugs is reading at the beginning of the cartoon, there are words on the front cover and spine. In the next shot, the words have gone.
Continuity mistake: When Bugs discovers that Mr Hyde fired a hole in the wood that he used to board the door up to stop Mr Hyde from entering the basement, the number of planks change between shots.
Continuity mistake: Shortly after the movie starts, Cal's plane lands and they go into the lab. Cal looks through a scope at an experiment and his assistant is next to him without glasses. After the experiment flames out, they show the men again but now his assistant is wearing glasses. (00:08:50)
Continuity mistake: When the Coyote attempts to capture the Road Runner for the first time, he is standing on a bare patch of pavement surrounded by the puddle of glue he is spreading. In the next shot, the Coyote is now standing on glue with no bare patch, and when he realises he is about to be hit by the truck, he is standing on bare pavement in middle of the glue puddle once again.
Continuity mistake: When Manuel takes off his sombrero to give to the other mice, you can see he has a straw in his hand, but when we see Manuel in the next shot, the straw is nowhere to be seen.
Continuity mistake: When the Gophers hear Elmer Fudd and the furniture salesman coming, they hide in the bottom drawer, but when Elmer drives home, the Gophers are now hiding in the second drawer down.
Continuity mistake: When the coyote is about to eat a tin can at the start of the cartoon, the bottle of wine in front of him changes position between shots.
Continuity mistake: When Sam closes the door after escaping the lions, you can see there is nothing under his feet, but in the next shot a doormat has suddenly appeared.