A groundbreaking discovery was made by scientists in Indonesia who observed a male Sumatran orangutan named Rakus using a local herb called Akar Kuning to treat facial wounds. Rakus chewed leaves from the climbing plant and rubbed the leaf juice into his cheeks, then applied the chewed leaves to the wound. This behavior was observed in June 2022 in the Suaq Balimbing area in Gunung Leuser National Park.
The research team, led by Isabelle Laumer from the Max Planck Institute for Animal Behavior, was thrilled by this observation as it was the first time they had seen a wild primate deliberately use a plant to treat a wound. They believe that Rakus learned to use the Akar Kuning plant for wound healing, possibly through accidental discovery or observation of other orangutans.
This discovery raises questions about the medicinal knowledge and abilities of these intelligent primates, as well as their potential common ancestry with humans. The research team plans to monitor injured orangutans in the area to see if this behavior is repeated and hopes that their findings will draw attention to the critically endangered status of orangutans in the wild.
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