Documentary, National Geographic Top 10 Biggest Beasts Ever br br National Geographic Top 10 Biggest Beasts br National Geographic's "Top 10 Biggest Beasts Ever" is a documentary special that explores the largest animals of their kind to have ever roamed the planet, focusing on prehistoric giants before human dominance. The program uses advanced CGI to visualize these colossal creatures, including birds with wingspans rivaling airplanes and dinosaurs comparable in size to a Boeing 737, bringing their lives vividly back to life through dramatic size comparisons and scientific analysis. br The documentary was originally aired in 2015 and features experts uncovering the latest discoveries and adaptations that allowed these supersized species to thrive. br br Saltwater Crocodile: The largest living reptile, with a maximum recorded mass of 2,000 kg (4,409 lbs) and a length up to 7 meters. br Blue Whale: The largest animal ever known to have existed, averaging 30 meters in length and weighing up to 200 tons. br African Elephant: The largest land animal, with males reaching up to 4 meters in height and weighing up to 6 tons. br Giraffe: The tallest land animal, with an average height of 4.7 meters. br Ostrich: The largest bird by weight, reaching heights of 2-3 meters. br Polar Bear: The largest carnivorous bear, with adult males weighing up to 1,200 pounds. br Asian Elephant: The second-largest land animal, smaller than African elephants but still massive, with males reaching 3 meters in height. br Gaur: A large wild ox or Indian bison, with adult males weighing 1,000-1,200 kilograms. br Hippopotamus: A large herbivorous mammal, weighing around 3 tons and measuring up to 4 meters in length. br Pelagornis: A prehistoric bird with a wingspan estimated at seven meters, one of the largest flying birds ever discovered.