Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) mature male 'Doyok' sitting on bench made for tourists - wide angle perspective. Pondok Tanggui, Tanjung Puting National Park, Central Kalimantan, Borneo, In...

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) baby aged 2-3 months belonging to Tata not yet named. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Rehabilita...

Edwin Giesbers / Female Orang Utan (Pongo pygmaeus) sitting, holding two young. One is her own offspring, the other was rejected by its birth mother, and so this female has adopted it. Both young are 3 months old.Capt...

Suzi Eszterhas / Bornean Orangutan (Pongo pygmaeus) next to signs which say 'Silence please. Respect the orangutans' and 'No Smoking' Tanjung Puting National Park, Borneo, Indonesia.

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Princess' walking along a trail carrying her daughter 'Putri' aged 2 years on her back. Camp Leakey, Tanjung Puting National Park, Central Kalimantan...

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Tata' and her unnamed baby aged 2-3 months portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Reh...

Ingo Arndt / Orang utan male portrait, wild {Pongo pygmaeus} Tanjung Puting National Park, Central Borneo

Ingo Arndt / Sumatran orang utan feeding on termites {Pongo pygmaeus abelii} Sumatra, Indonesia

Ingo Arndt / Orang utan hand holding branch close-up {Pongo pygmaeus abelii} Sumatra, Indonesia

Gerry Ellis / Orangutan (Pongo pygmaeus) sub-adult male in trees in haze caused by forest clearing, West Kalimantan, Borneo, Indonesia. October, 2015

Sean Crane / Orangutan (Pongo pygmaeus) juvenile investigating camera, Tanjung Puting National Park, Borneo, Indonesia

Roland Seitre / Orangutan (Pongo pygmaeus) female, native to Borneo