This is a legend or a story. I myself have noted a large cobra eating the chicken, not in part, all at once. One would never have thought that the cobra could eat the whole chicken. Then the cobra's power is great because it is meditative. In all mystical symbols the cobra has been made a mystical sign, because there is so much that one can learn from the life of a cobra. It fasts for a long time because it takes time to assimilate, not so greedy as a dog; does not run after its food, it attracts food. Then the patience of the cobra is wonderful. It is the same picture. Therefore mystics have given in the ancient mysticism the cobra in all their symbols. The whole manifestation is attracted to that divine spirit.