Tool use among orangutans was first documented by Carel van Schaik. In 1994, Carel observed orangutans developing tools to help themselves eat, while conducting field work in Gunung Leuser National Park, in the northwest Sumatra. Specifically the orangutans were using sticks to pry open pulpy fruits that have "Plexiglas needles" capable of delivering a painful…
Can a chimpanzee be trained to use a spear, ax or knife? - Quora
Anjana The Chimpanzee and Two White Tigers, Mitra & Shiva – Primatology.net
Bornean Orangutan (Pongo pygmaeus)
What do you think of orangutans? - Quora
utanfishing
Orangutans use tools - 9GAG
Why haven't other apes watched us and started to wear clothing or use tools or create structures like homes? - Quora
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UNTUNG, ORANGUTAN FISHING?
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🔥 This orangutan used a spear to catch fish after observing local fisherman 🔥 : r/NatureIsFuckingLit
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