Tool-Using Orangutans Learn Like Humans | WIRED
Clever orangutans invent nutcrackers from scratch
Orangutan - Wikipedia
Spy in the wild: Sawing Orangutan | This orangutan is 100% wild! Incredibly these intelligent apes have learned tool use by watching humans nearby… and 'borrowing' their tools!... | By BBC Earth | Facebook
Orangutan guide | BBC Wildlife Magazine | Discover Wildlife
Orangutan Learns to Saw Wood - YouTube
Orangutan From Borneo Photographed Using A Spear Tool To Fish, Imitating Local Fishermen | WowShack
Orangutan Behaviour - Orangutan Foundation International Australia
Orangutan Hats and Other Tools Animals Use: Haynes, Richard, Laberis, Stephanie: 9781536200935: Amazon.com: Books
Orangutans can learn how to use stone tools as hammers and knives | New Scientist
Saint Louis Zoo | Sumatran Orangutan
In Orangutan Parenting, the Kids Can Get Their Own Dinner - The New York Times
Orangutans and otters pictured playing together in photos shared by Belgian zoo | CNN
The Amazing Sumatran Orangutan | Cincinnati Zoo Blog
Funny Orangutan Learns to Saw Wood! | Spy In The Wild | BBC Earth - YouTube
Bio 342 Fall 06
Orangutans have the cognitive ability to make and use stone tools • Earth.com
Orangutans show pre-requisites for stone tool technologies | University of Tübingen
Sumatran orangutan tool use Stock Photo - Alamy
Orangutans make musical instrument
Orangutans Have a Big Idea | Science | AAAS
Orangutan Tool Use - YouTube
