Factual error: Virtually all of the CGI animals in this film are rendered at about 150% of their natural size. Additionally, even a small gorilla could tear the strongest human limb-from-limb, so Tarzan wouldn't have lasted two seconds in a hand-to-hand combat with an alpha male gorilla.Charles Austin Miller
Factual error: Near the beginning of the film, Greystoke exits Number 10 Downing Street after speaking to the Prime Minister. Downing Street is shown as a busy thoroughfare with many people walking by. But, in reality, Downing Street is a cul-de-sac (a dead end) so would unlikely to have ever been that busy. Incidentally, the public right of way into Downing Street has never been revoked despite 21st century security measures restricting public access, which is possibly technically illegal in UK common law.