Factual error: The type of hanging equipment they have when they are about to hang the monk wasn't used until the 19th century, while the third crusade which King Richard is out fighting was in the 12th century.
Factual error: In the antique shop, Woody is at a point where he's at the center of a tug-o-war between two sides, with the "bad toys" pulling on his draw string for his voice box. The voice box can still be heard spouting its lines, despite the fact that the tension on the string is never released allowing it to draw the string back in, which is what makes the sound. It can't make it's sounds with the string continually out in the pulled position.
Factual error: Throughout the film, most Japanese words are spelled in Katakana. In real-life Japanese, however, Katakana is exclusively used for foreign words adopted into Japanese language, like 'table', 'television' (mostly it is abbreviated to 'telebi') and 'racing car'. But in the film, even indiginous Japanese words such as 'samurai' are spelled in Katakana, not - as they should be - in Hiragana (the syllable system used for native words).
Factual error: King Neptune's crown changes size when Plankton steals it and when SpongeBob and Patrick retrieve it.
Factual error: The drum kit that Courtney plays at the concert is wrong. It has too many cymbals, two bass drums (one is unneeded) and she didn't kick the pedals to play the bass drum and cymbals.
Factual error: When Merlin and Arthur are squirrels Merlin says squirrels mate for life, which is not true. Squirrels are promiscuous.
Factual error: Steve Trevor tells Aquaman that he is a Colonel in the US Army. But he is wearing First Lieutenant bars on his uniform.
Factual error: When the boy sends the letter, it already has a postmark.
Factual error: Even if he was falling hard, Mandible still would've survived hitting the overturned root, as ants do not have much body mass.
Factual error: The film gets basic physics wrong while trying to depict relativity. Buzz Lightyear leaves T'Kani Prime for a trip around its sun, travels with near-light speed, and returns four years later. This could only have happened if T'Kani Prime's sun were at least two lightyears away! It gets more ridiculous. Buzz's last trip takes 26 years, even though he has traveled at faster-than-light speed. Overall, T'Kani Prime is experiencing either a mysterious time slow-down or a rapid orbit expansion.
Factual error: If there was that much of a famine in the pack, the Omega wolves would surely have already died of hunger.
Factual error: Apparently, Ratigan had to cross the River Thames to reach Big Ben from Buckingham Palace as evidenced by him tossing Fidget into the river before taking reign of the blimp. However, the two landmarks are on the same side of the river.
Suggested correction: Ratigan changed direction multiple times during the chase because he was trying to get away from Basil. He may have flown away from that side of the river, but then after changing direction he flew across to the side he came from again.
Factual error: At the beginning of the cartoon, Junior is reading a Bugs Bunny strip on his father's newspaper. Later on in the cartoon, Henry discovers that the newspaper he was reading was dated in the year 1928. This is ten years before the Bugs Bunny character was created.
Factual error: Towards the end of the movie when Superman and Henshaw are fighting on the Watch Tower in space, Lois hits the sun shades to lower them so that direct sunlight can hit Superman and power him up. This is out in space with no atmosphere to filter the sunlight. The reason the blockers were there was for this reason, to keep the harmful unfiltered sun light from hitting people on the ship through the windows. However, she is able to stand there in the direct light after it's done and kiss and hold Superman without being hurt or burned by the intense direct unfiltered sunlight or its radiation.
Factual error: The female Frankenstein tries to set Dracula up with during the wedding reception is referred to as his "right arm's cousin" but the big arm that looks like Frankenstein is her right arm. (00:08:10)
Suggested correction: Frankenstein wasn't saying she had the other half of his right arm (i.e. his left arm), just that the 2 arms came from 2 people who were cousins.
Factual error: When the magician has brought the crocodile home at the beginning of the movie and is trying to get him to sing, the crocodile is shivering because he's cold. The magician wraps him with a scarf and the crocodile warms up and is willing to sing. However, this would not work, as crocodiles are cold-blooded and unable to generate body heat. The crocodile would need a heat lamp or some other source to become warm again.
Factual error: During the escape from the farmers market a red London bus is in the background. Those busses aren't used in Gloucester.
Factual error: When the Fat Controller arrives at Tidmouth Sheds, Tidmouth Sheds appears to be missing from the reflection.
Factual error: Leo says he smells potato, but he is in a space suit and in space, making it impossible for him to smell it. (00:33:00)
Factual error: When Jeremy and Jack climb the beanstalk and arrive on the clouds, it starts to rain. Where is the rain coming from?