When a wild orangutan in Indonesia suffered a painful wound to his cheek, he did something that stunned researchers: He chewed plant leaves known to have pain-relieving and healing properties, rubbed the juice on the open wound — and then used the leaves as a poultice to cover his injury.
"This case represents the first known case of active wound treatment in a wild animal with a medical plant," biologist Isabelle Laumer, the first author of a paper about the revelation, told NPR.
She says she was "very excited" about the orangutan's seeming innovation, which was documented at the Suaq Balimbing research site in the Gunung Leuser National Park in northwest Sumatra, where some 150 orangutans live in a protected rainforest.
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