Snake
Represents rebirth, healing, and primal energy. In many cultures, snakes are seen as symbols of life force, transformation (through shedding their skin), and healing (as seen in the caduceus, the symbol of medicine). They may also signify hidden fears or the shadowy aspects of life.
Themes: rebirth, healing, energy, fears, life force
More in: 'The Golden Bough' by James George Frazer.