Continuity mistake: When Sam goes to the bottom right door at the end of the in-and-out routine, you can see that the handle is on the left hand side of the door, but in the next shot it is now on the right hand side.
Other mistake: When Sylvester is looking in the mirror whilst trying on hats, one of the hats has a price tag on it which reads $105.95. However, you can see the price numbering is the right way round - it should be back to front.
Continuity mistake: When Classified is telling the penguins about the North Wind as Skipper eats the Cheesy Dibbles, the amount of cheese powder on Skipper's feathers differs between shots.
Continuity mistake: When Mugsy takes Bugs into the other room, you can see the door has no handle, but when Rocky draws a gun and goes to see Bugs, a handle appears from nowhere.
Continuity mistake: This is near the end of the movie when Charlie Brown is running to catch the Little Red Haired Girl before she boards the summer camp bus. As Charlie encounters obstacle after obstacle he runs into the "Kite Eating Tree" and asks for help. A kite falls down and he gets tangled up in the string and he is pulled away. There is no ball of string at the end. Several cuts later when everyone is amazed that Charlie Brown is actually flying a kite and following him, a ball of string magically appears and Charlie Brown is holding it while running and flying the kite.
Continuity mistake: When Norm, Olympia and Vera are at Olympia and Vera's apartment, Vera is carrying two grocery bags to put onto the counter whilst Olympia is talking about human activity potentially destroying the Arctic. When Vera puts the grocery bags on the counter, there is nothing shown on the chopping board, but a few shots later, a tomato and an onion have suddenly appeared on the chopping board. (01:03:55)
Continuity mistake: When Dex confronts the Fat Cat Burglar, in the wide angle where he says "one last chance", the henchman in yellow behind him is standing on a white coloured section of the hot air balloon. In the next shot, the henchman is now suddenly standing between a purple section and white section of the hot air balloon. (00:02:55)
Continuity mistake: Rafe has just met the bumbling fool that is his principal: as Leo sneaks out of the building to meet them, behind Rafe a girl wearing white and pink is walking past them and getting into school. Several seconds later as the principal has already begun lecturing Rafe, the camera is back on him and the same girl is again walking behind him and getting to school. (00:07:30)
Character mistake: When the Level 3 Sentry gun is revealed on the right of the screen and fires a rocket barrage to the left, you hear it explode as the Engi looks over. You then hear Scout scream "My arm!" really loud. Then an disembodied arm falls in front of Engi with a plop. However, this arm is from the character model of Sniper, not Scout. Including his glove and his watch. (00:00:45)
Continuity mistake: When Goofy searches through the dresser drawers one of the ghosts causes trouble, then Goofy breaks through the top of the dresser and winds up trapped inside, but when all four ghosts appear the dresser top is perfectly fine and that damage has vanished. Also, two of the drawers (one large and one small) fall out of the dresser, but as the four ghosts are pushing the dresser those two drawers have reappeared in their proper places.
Continuity mistake: When Mickey hides Pluto in his suitcase, the entire handle to the suitcase breaks off and Mickey tosses away the handle. This handle reappears unbroken when Mickey takes Pluto out of the suitcase and then quickly hides him again, though it's broken again in following shots. Then at the end, when Pete tosses both suitcases off the train Mickey's suitcase has the broken handle, but when it lands on Mickey and Pluto the handle reappears unscathed once again.
Continuity mistake: Trying to stop the bank robbery, the SWAT team arrive and they line up guns at the ready. It shows three of the four kneeling down with one standing as they take aim and start to shoot. In the next shot, suddenly all four are standing up and the SWAT Team armored truck appears beside them. (00:01:40)
Continuity mistake: When Jason lunges at Batman with his knife, there is a pile of garbage by the wall where he lands. In the first shot the barrel by the garbage is wooden. But in the next shot it's suddenly a metal barrel/drum. It then changes back to a wooden barrel again. (00:04:20)
Continuity mistake: Constantine wakes up from a nightmare and sits up in his bed clutching his head. The window beside him has the blinds wide open with Big Ben seen through the window. But in the next shot suddenly the blinds are down covering a lot of the window. Also his bed posts change shapes. (00:03:10)
Continuity mistake: At the start of the film, Eggman is chasing Sonic through the streets and there is a shot of the city skyline down a street behind Sonic as he makes a turn. The camera then cuts to inside Eggman's ship to a close up him with the city skyline still behind him, only now it's different buildings behind Eggman. (00:01:00)
Continuity mistake: En route from the front door of Wayne's mansion to the table in the Batcave, the pile of pizza boxes in Alfred and then in Mike's hands continues to change in size and number: at first the pizza girl delivers 11 boxes, Mike slams on the table just 8, but he brought down the stairs twice that amount (without counting through freeze-frame the precise numbers, it's simply obvious at first glance that the pile is bigger in some shots and the pizzas themselves are pictured of inconsistent size).
Other mistake: When the characters go to the Himalayas, the whole time, like for 20 mins, including the confrontation scene, they are all wearing casual, short-sleeved shirts. You can see Mr. Burnish's henchmen wearing winter clothing, while the main characters don't freeze to death. They only start getting cold after a long time.
Continuity mistake: The heels on Barbara's shoes appear and disappear throughout the movie.
Continuity mistake: Bruce and Selina sneak away from the party while Bruce's neglected childhood friend fetches the drink. The bottles on the shelves behind the counter change between shots when he goes "Seriously? Both of them?" It's like a portion of the leftmost shelf has been sliced off for the close-up. (00:05:00)
Deliberate mistake: In the Spanish release, the name of the family store is written in Spanish, but inside the place it's in English everywhere. This is a very common mistake in foreign kids' films released in Spain.