Factual error: In the beginning when the animals are waking up from hibernation, it shows Ozzie and Heather running out of the log, which shows they hibernated, but opossums don't hibernate.
Factual error: Jerry says that Flynn argued with Stephen Hawking regarding the thesis of Hawking's book when Flynn was only nine years old. However, Flynn celebrates his 32nd birthday in the movie in 2006, meaning he'd have been 9 in 1983 and 1984, while Hawking's first book, A Brief History of Time, wasn't published until 1988.
Factual error: When Arthur is in the bar, the music is chronologically out of order. The film is set in the fifties. One of the songs playing is Staying Alive from the seventies.
Factual error: As Christian Bale's Skyraider releases rockets, at first they drop like bombs. In real life, rockets shoot away instantly, at an almost straight line from the launching plane, never falling like bombs.
Factual error: In the last part of the movie when the animals attack, one of the hunters call the warden. The hunter's phone is a SonyEricsson W710i. This phone does not support video calls and no camera on the LCD part of the phone where it fell forward and supposedly showed the videos to the sheriff.
Factual error: Jasper is implied to live somewhere south/southeast of London, however when Theo meets him at the railway station signs can be seen reading "Alresford", the filming location, which is in Hampshire and too far west to be a plausible meeting place.
Factual error: Sharpe follows a wagonload of powder kegs into the Western Gatehouse, then down a corridor lit with torches, to the end of the corridor where Indians were tying together quickmatch, once again by torchlight. With the propensity for powder kegs to leak, even an Indian subadar would use closed lanterns.
Factual error: Winter in Antarctica begins in June and ends in September. The movie says winter is beginning in February which is incorrect in the Southern Hemisphere.
Factual error: When the Toad's foot breaks the pipe of liquid nitrogen, it should have frozen the water immediately, but it takes a lot more time to allow the wave to get closer.