Male Bornean Orangutan - Big Cheeks. Image by Eric Kilby from Somerville, MA, USA, CC BY-SA 2.0, Male Bornean Orangutan - Big Cheeks. Image by Eric Kilby from Somerville, MA, USA, CC BY-SA 2.0, ...

A three year hunt for patterns hidden in the roars, sighs, and other noises made by Indonesia's orangutans has discovered 'a full spectrum' of complex vocalizations. The breakthrough comes hot on the ...

Vivy, a critically endangered Bornean orangutan, has returned to the rainforest with help from The Orangutan Project and the Bornean Orangutan Rescue Alliance Kelli Bender is the Pets Editor at PEOPLE ...