Continuity mistake: As Gromit tries to get to the window with the bomb, he is stopped by being hit hard with a large metal oven paddle which swings in from his front right side. When we see Piella holding it, there is a Gromit-shaped dent in it, but it is dented the wrong way, bulging outward on the side he was hit with instead of indented.
Deliberate mistake: When all the thumbs are at the wall saying "I'm the king of the globe" and "I'm a dentist" you cannot see their legs, so that saved some costume work.
Continuity mistake: The snowman hits his nose with a hammer, completely bending it in half. In the next shot it is suddenly magically straight again.
Factual error: The raiding party approaches the French ship in small boats without using muffled oars which was a must to approach silently. Oars were wrapped with cloth to deaden the sound.
Continuity mistake: When we see from Tom's view the fridge he is going to crash into, you can see the cheese is on the second shelf, but when he crashes into the fridge, it has moved to the top shelf.
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: When Butch is chasing Tom, Tom puts a flowerpot on a swing which crashes into Butch and it leaves earth on the floor. But when Butch uses a guitar to spank Tom when he comes down on the swing, the earth has completely disappeared.
Other mistake: In the opening titles, Irven Spence's first name is incorrectly credited as Irvin.
Continuity mistake: When Porky is lighting the candles on the cake at the beginning of the cartoon, the position of the candles change between shots.
Continuity mistake: The Italian peddler puts some weighted horse shoes on Spunky to inhibit his movement. As the Peddler is leaving and says he will be right back, Spunky is facing him into the building. But then it cuts back from the Peddler to Spunky and suddenly he is facing out the building the opposite direction. It's only after this when he tries to move that he discovers his feet too heavy to lift, yet somehow he got turned around in an instant. (00:03:50)
Continuity mistake: When Minnie Mouse falls down on the pillow whilst attempting to skate, the pillow bursts and covers Mickey with feathers. When Mickey goes off skating you can see nothing surrounding the pillow, but when we return to Minnie later on, there are now a lot of feathers around it.
Continuity mistake: During the slow-motion sequence, Speedy slams the mallet on the cat's paw and leaves the mallet on the ground when he rescues the mouse. When he puts a stick of dynamite on the cat's tongue, the mallet has gone.
Continuity mistake: When the announcer tells Droopy and the wolf about the prize they can have if they win the bullfight, there is a red wall behind the announcer that keeps disappearing and re-appearing between shots.
Continuity mistake: When Poochini is rehearsing, Mysto the Magician knocks on the door of his dressing room. At this point, you can see that the handle is on the left hand side of the door, but when Poochini opens the door, he opens it from the right hand side.
Continuity mistake: When the green devil recalls the time Tom serenaded another girl with his big bull fiddle, his whiskers disappear for a moment.
Continuity mistake: As Lulu is racing up to the school, you see the brick base of the school house and that the bricks are a dark red color. It then cuts to a closer angle as she is about to pull her fishing pole out of the steps and suddenly the bricks are now a light grey. Also in the same shots, you see first that the tree's shadow is lay across the walkway in front of the steps. But in the close up the shadow is nowhere to be seen. (00:01:55)
Continuity mistake: When Tom traps Jerry in the blinds, he pulls the cord and squashes Jerry. At this point, you can see Tom is holding the cord, but when we Jerry sliding down the blinds in the next shot, Tom is no longer holding the cord.
Continuity mistake: When Daffy enters Bugs' living room wearing a rabbit costume, you can see the door is plain green. But when Elmer Fudd enters to confront Daffy, the door is now divided into three sections.
Continuity mistake: When Sylvester's owner tells him that she will get into the hotel, you can see that she is wearing a brooch on her shirt. But when she is carrying Sylvester around her neck in the next shot, the brooch has vanished.
Audio problem: As the short starts, a hand is drawing several animals with musical instruments to be in the orchestra. And during this there is a music score with the animation. The second one is a pig with a tuba. As the left hand reaches in to pull the picture of the pig away, there is a glitch in the music, it cutting out for a moment with a rough scratchy pop sound, then coming back in as the right hand begins drawing a bird with a violin. (00:00:45)