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: 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: 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: 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 Elmer is picking up the money and putting into the case, the dollar note next to Sylvester changes position between shots.
Continuity mistake: When the man is imitating the frog to the agent in the talent agency, he is initially holding his hat, and then throws his hands up into the air. When his hands come back down, the hat 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 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.
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 Speedy is bowing to the other mice when he comes back, you can there are four Sombreros behind him, but after a quick cut to Sylvester, we return to Speedy and a flower appears from nowhere.
Continuity mistake: When the camera pans in on the audience at the start of the show, you can see that Granny is sitting next to Bugs and Daffy, but after a quick cut to Elmer, we return to Bugs and Daffy, and Granny has disappeared.
Continuity mistake: When Bugs Bunny pushes down the door to escape from Mr Hyde in the closet, there are some hinges and nails on the floor when he runs into the laboratory. But when Dr Jekyll emerges from the closet, there is now one hinge on the floor.
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: Daffy Duck is holding an axe in both hands when the telegraph pole he is standing down falls over, but when we see him in the next shot, the axe has disappeared.
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 Tom is tying the string on the alarm clock whilst assembling his mousetrap, you can there is a bar which the string is attached to and the wall next to it is perfectly fine, but in the next shot there is a piece broken out of it.
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: In the climatic confrontation between Artie West and Mr. Dadier at the end of the movie, West cuts Dadier in the hand with his knife. The scene cuts to Dadier holding up his hand, and it's already covered in blood.