Nick Garbutt / Male Bornean / Grey gibbon (Hylobates muelleri) in rainforest canopy. Danum Valley, Sabah, Borneo, Malaysia

Nick Garbutt / Male Bornean / Grey gibbon (Hylobates muelleri) hanging in rainforest canopy. Danum Valley, Sabah, Borneo, Malaysia

Theo Allofs / M?ller's Bornean Gibbon (Hylobates muelleri) mother and baby hanging in trees, Borneo, Malaysia

Anup Shah / Grey / Muller's bornean gibbon (Hylobates muelleri) wet after rain, captive, Endangered

Thomas Marent / Muller's Bornean Gibbon (Hylobates muelleri) pair jumping, Tabin Wildlife Reserve, Sabah, Borneo, Malaysia

Thomas Marent / Muller's Bornean Gibbon (Hylobates muelleri) mother with baby in tree, Tabin Wildlife Reserve, Sabah, Borneo, Malaysia

Thomas Marent / Muller's Bornean Gibbon (Hylobates muelleri) hanging, Tabin Wildlife Reserve, Sabah, Borneo, Malaysia

Thomas Marent / Muller's Bornean Gibbon (Hylobates muelleri) hanging in tree, Tabin Wildlife Reserve, Sabah, Borneo, Malaysia

Roland Seitre / Bornean gibbon (Hylobates muelleri) in tree, Singapore Zoo, Singapore. Captive, occurs in Borneo (Brunei, Indonesia, Malaysia). Endangered species.

Sebastian Kennerknecht / Muller's Bornean Gibbon (Hylobates muelleri) in tree, Tawau Hills Park, Sabah, Borneo, Malaysia

Ben Cranke / Bornean gibbon (Hylobates muelleri) resting, Sabah, Malaysian Borneo