In a statement, Zoo Atlanta said that at 39, Chantek was one of the oldest male orangutans in North American zoos. His cause of death was not yet known, it said, but vets had been treating him for ...

The diversity of orangutans extends even further—into differences whose origins continue to resist scientific understanding. From his perch high in the rain forest canopy of Sumatra, a big male ...

This is Otto, an adult flanged male orangutan, avoiding fires and traveling through a smoke-filled forest in the Tuanan Orangutan Research Station in Indonesian Borneo. Disclaimer: AAAS and ...

Here’s a question for you: how do you film a large, dominant, and allegedly aggressive male orangutan in thick, murky peat ...