Researchers say this may be the first observation of a nonhuman animal purposefully treating a wound with a medicinal plant

It is not the first time wild animals have been spotted self-medicating: Among other examples, Bornean orangutans have been seen rubbing their arms and legs with chewed leaves from a plant used by humans to treat sore muscles, while chimpanzees have been recorded chewing plants known to treat worm infections and applying insects to wounds.