Continuity mistake: At the start when Pistachio's dad is in the car, you see in the background that they are on a road, but when you see a wider outside shot, he isn't driving on a road.
Continuity mistake: In the scene where Winnie and Jessie are going swimming, when Winnie takes off her dress, you see that her right foot was not completely out of the dress. Then in the next shot, you see Winnie jump in without moving her dress at all, and it is far away from her on the rock.
Other mistake: Fleeing with Little Creek from the fort, Spirit destroys small railing to free horses tied to it. But after the pole gets torn off, it leaves an empty space on the ground, without any hole or at least broken remains.
Continuity mistake: In the scene where Alan is showing him how the Thunderpants work, he puts them into a machine to get rid of the stink or whatever it is. It makes a load of noise and just before he takes it out again you see the lights change and he is drumming his fingers just behind them. The very next shot shows him with his hands by his sides.
Continuity mistake: When the villagers are joining the old chief on the beach, to see all the beached whales, it is raining heavily, yet his face and suit are completely dry.
Continuity mistake: When the King enters the castle a bowl of chocolate pudding is dropped on his head. You can clearly see the pudding run down his face, however when the bowl is removed from his head the bowl is completely empty and the King is totally clean. (00:19:55)
Continuity mistake: In the scene when Justin's father is coming out of the shed dressed as Santa Claus (the second time), the clock next to Justin reads 12:00. When he hears the "Ho Ho Ho" and gets up out of bed to go to his window, the clock says 11:56. (01:15:40)
Continuity mistake: When Kermit is in the park looking at his plaque he wipes off all the snow and reads it. In the next shot of him walking to a nearby bench the plaque is covered again but it is not snowing heavily enough to have been covered so fast.
Continuity mistake: Jane has the key in her hand, trying to unlock Peter Pan from the chains. But when Jane starts to fly, her hands spread out and the key disappears. Then she goes to free Peter Pan, and the key is back on her hand.
Factual error: When Carl first receives 26 at the hatchery, he asks what kind of dinosaur she is. He is told she is a Hadrosaur (duck-billed dinosaur), but when we see her, she is some sort of Ceratopsian (i.e.: Triceratops). She is later referred to as a Chasmosaur (which while not looking like 26, IS a Ceratopsian).
Continuity mistake: During the chase in chariots (2 Romans against Astérix), when the palace is attacked, in one shot, we can see there is only one Roman soldier on his chariot instead two. (01:21:55)