While 31-year-old orangutan Tua cuddles and hugs her newborn, the Philadelphia Zoo is celebrating the new addition to this critically endangered species’ population. The Sumatran orangutan ...

According to the International Union for the Conservation of Nature, the Sumatran orangutan is on the critically endangered list. This distinction means that the species faces an extremely high ...

Orangutans that live in Sumatra usually make their nests in palm forests. But one day in 2014, Panut Hadisiswoyo caught sight of an orangutan riding around the streets of Medan, the island’s ...

And after seeing these delightfully cute photos ... Only 100 years ago, an estimated 600,000 orangutans roamed the Borneo and Sumatran rainforests. But now they are one of the world’s most ...

Dr Peter Pratje from the Frankfurt Zoological Society has spent decades conserving the rare Sumatran orangutan. Here he describes his hopes and dreams for these critically endangered primates.

These native forests are home—the only home—for the arboreal Sumatran orangutan. During the process in which land is cleared for palm oil plantations, orangutans are either displaced to lower quality ...

But the judge did order an investigation as to Sandra's captivity conditions and if she is a victim of ill-treatment under the 1954 animal protection bill. Sandra, a 20-year Sumatran orangutan ...