Natural selection dictates its own rules of survival and to remain alive in the world of animals you should better be strong, big, dangerous and carnivorous. However, not all animals are born with a bunch of these useful qualities. So they have to develop some other talents, like the skill of being cunning, for example. Some of the animals have improved this skill to such a level of perfection that it will be useful even for human beings to learn something from them.
Foxes are the impersonation of craftiness in legends and fairy-tales of different countries of the world and this reputation has been honestly earned by them. For instance, foxes use an interesting method of getting rid of fleas and other intrusive insects. A fox carries a stick in its teeth and jump into the water. It swims to a place deep enough for only the nose and the stick to emerge from water. All insects gather on the stick to survive. Then the fox throws the stick with all these insects as far away as possible and swims to the shore.