Continuity mistake: In the dream, the school house asks Lulu if she'd rather be a pig and pulls up a blackboard with the word PIG written on it. There is a stick of chalk at the bottom of the board to the right. When it cuts to a close up of the blackboard, the chalk suddenly moves closer to the center of the board and is almost under the word PIG. (00:04:40)
Continuity mistake: After Tom is sobered up by water, you can see behind him there is a bottle of seltzer in the refrigerator, but when Jerry comes along with a chicken drumstick in the next shot, the bottle has disappeared.
Continuity mistake: When Pluto is by the radio in the music shop, there is a record player behind him which has three buttons on the side, but in the next shot the buttons have moved a few inches to the right.
Continuity mistake: When the mouse pulls the lion's tail in the jungle, there is a tree in the background. When the camera closes in on the mouse in the next shot, the tree has gone, and in the shot after that, it is back again.
Continuity mistake: When the cat places the tiny canary on to the plate, the salt and pepper pots on the table change positions between shots, and the cabinets in the background disappear. He also has a knife and fork in his hands, but after the canary says he's been sick, we return to the cat and the knife and fork have disappeared.
Continuity mistake: When the dogs run away from the Mexican hairless dog after thinking she's a skunk, the Mexican dog's ears are pointing up but in the next shot they are pointing down.
Continuity mistake: When Jerry replaces two keys on the piano with a mousetrap, Tom gets his finger caught and there is a catch lever at the bottom of the trap. But in the next shot when Tom pulls up the mousetrap and his finger expands, the catch lever has disappeared.
Continuity mistake: When Tom is tip-toeing past the gate at the start of the cartoon, Spike is sleeping and you can see there is nothing around his neck, but in the next shot a dog collar has suddenly appeared.
Continuity mistake: When Humphrey Bogart comes into the kitchen after being hit in the face by a coconut custard pie, the number of cream spots on his dinner jacket changes between shots.
Continuity mistake: When Butch points his pistol at Tom, you can see that the handle has nothing written on it, but in the next shot the words "Ajax" have appeared.
Continuity mistake: When the delivery man gives Cecil Turtle a gift while he is resting on the beach, there is a pink ribbon on the side of the box that disappears in the very next shot.
Continuity mistake: When Elmer Fudd is filling up the trap with water, the handle of the trowel in the dirt next to him is initially coloured brown but changes to green in the next shot.
Continuity mistake: When the man picks up the sandwich that the ants have made, there is a cocktail stick with an olive on it. But when he takes a bite of the sandwich, the cocktail stick has gone.
Continuity mistake: When Mickey Mouse is speaking to Minnie Mouse on the telephone, the telephone cord disappears and then re-appears.
Continuity mistake: There is an apple core on the floor when Tom starts putting covering it with flour, but when he has finished covering the floor, there is no sign of the apple core.
Continuity mistake: When Daffy disturbs the man by hitting the door on his room with a hammer, the man leaves and you can see that Daffy puts one of the fingers of his right hand on his beak. When we see the man going down the lift in the next shot, Daffy no longer has his finger on his beak.
Continuity mistake: When Thomas uses a fishing rod to hoist himself up to Tweety's cage, you can see that Tweety is resting himself with his arm on the swing. But when we see Tweety in the next shot, his arm is on his chest.
Continuity mistake: When Tom realises he is drinking sea water in the bucket Jerry gave him, he drops the bucket on the towel, but when he spits the water in the girl cat's face, the bucket is nowhere to be seen.