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.
Continuity mistake: When Bugs Bunny asks who would believe such a zany story, you can see his book is resting against a stick. But after a quick cut to Cecil Turtle, we return to Bugs and the book has disappeared.
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.
Revealing mistake: When the businessman rushes back into his bed after closing the window that Daffy opened, he is wearing his normal trousers.
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 we see Pluto's kennel at the start of the cartoon, there are initially three bricks on the left hand side of the entrance, but in the next shot there are now four.
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 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: In the scene towards the very end of the film when Sister Ruth goes to see Mr. Dean, she is wearing a great deal of lipstick - in fact, her make-up is indicative of her having left the religious order run by Sister Clodagh. She becomes hysterical and faints. When she wakes up she's no longer wearing any lipstick (no indeed any make-up at all).
Continuity mistake: In the scene when Jerry is hiding in the oven and Tom and Butch turn on the gas, the part on the right hand side of the oven keeps changing from having four holes to three holes between shots.
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.
Character mistake: Tenango is a destination/rendezvous town, but at the luncheon a character refers to it as Durango.
Factual error: After the credits, at the beginning it shows "New York 1883" but in an early scene when Powell is reading the newspaper in his study he is complaining about the Mayor of New York whom he calls "Honest Hugh Grant." Hugh J. Grant did not become mayor until 1889.
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: Pearl is singing a song to mock her boss at the factory. She goes through the first lines about being too worn out "to play." With her feet on the work table, she puts her hand under her chin. In the background, a fellow seamstress is watching. In the next shot, her arms changed position, now crossed in contrast to the previous shot. (00:04:40)
Continuity mistake: Bongo the bear, riding in a car of the circus train, looks out the window. There are four vertical bars on the window - but when seen from outside the train, it has six bars.
Continuity mistake: In the scene where Jeb shoots Prentice, we see Prentice with his right hand covering the wound just below the right rib cage. When Jeb carries him inside, Prentice's right hand is now covering the left side rib cage. (01:05:55 - 01:06:35)