Gigantopithecus

Its name says it all; it was a monstrous ape, closely related to the orangutan, that roamed the bamboo forests, jungles and mountains of China, India and Vietnam during the Pleistocene. It was a vegetarian, but scary nonetheless; it could grow up to three meters tall and weigh up to 550 kgs! Its strength must have been extraordinary and probably kept it safe from most predators. It finally went extinct 300.000 years ago, possibly due to overhunting by early human species or as the result of climate change. Of course, all yeti and bigfoot believers like to think that Gigantopithecus survived somehow in the most remote parts of the Himalaya