Did Rakus know exactly the medical properties of this specific yellow root plant? But, how did an orangutan know that it is anti-inflammatory and pain-killing? The strange thing is, in decades of observing orangutans, scientists have never before witnessed an animal self-heal a wound like Rakus did. Could it be that he accidentally touched his wound with his finger that had the plant on it? Since the plant has strong pain-relieving properties, he might have felt instant relief, so he kept applyi