Orangutan of the Month for Dec, 2018: Wendy – OrangutanFoundationInternational
Primate walking hi-res stock photography and images - Alamy
Wild orangutan (Pongo pygmaeus) mother walking through tropical rainforest trees carrying baby on her back in Tanjung Putting National Park, Borneo Stock Photo - Alamy
The Prancing Papio: Apes Walking Upright: That's Just How They Roll (or Walk ).
Orangutan Couple Walking In Ho Chi Minh City, Vietnam : r/likeus
Orangutan | Smithsonian's National Zoo
Orangutan walk upright 艾迪覓食- YouTube
Lessons from the orangutans: Upright walking may have begun in the trees