They say that the physicians of the ancient times learned so much from the bear, the bear who under different conditions, when it was ill, found different herbs to cure itself. And those who used to study nature in ancient times found the effects of different herbs in the forest by the help of these animals. The monkey is supposed to know so much about medicines that even when it is not well and when it is necessary that it must fast, it fasts. Man is afraid to fast for three days, but a monkey does.