When a wild orangutan in Sumatra suffered a facial wound, he did something that caught the attention of scientists: the animal chewed the leaves of a liana vine – a plant not normally eaten by apes – to heal the wound.

A remarkable body of accounts from ancient to medieval times describes self-medication by many different animals. The animals used plants to treat illness, repel parasites, neutralize poisons and heal wounds. #animals
https://theconversation.com/animals-self-medicate-with-plants-behavior-people-have-observed-and-emulated-for-millennia-229768