Observers have documented multiple animal species using plants for self-medicinal purposes, such as great apes eating plants that treat parasitic infections or rubbing vegetation on sore muscles. But a wild orangutan recently displayed something never observed before—he treated his own open wound by activating a plant’s medical properties using his own spit.

Yet this was no ordinary medical treatment. The orangutan — dubbed "Rakus" by the scientists at Indonesia's Gunung Leuser National Park, where he was spotted — may now be the first documented case of a wild animal treating its own wound with medicine.

Scientists working in Indonesia have observed an orangutan intentionally treating a wound on their face with a medicinal plant, the first time this behavior has been documented.

The findings represent the first report of wound treatment by a wild animal using a plant with known medicinal properties.

An orangutan named Rakus has a pretty solid grasp of first-aid. He's the first orangutan ever observed to intentionally self-heal himself with plants.