This video depicts an adult female Sumatran Orangutan walking upright in the Gunung Leuser National Park, Indonesia. By analyzing the movement of wild orangutans, which spend most of their lives in ...

Husky and hairy, with the flaming orange coloring of a bad dye job, the orangutan doesn’t look like the most agile of primates. But in fact these great apes, native to the jungles of Malaysia and ...