Hydra was not a creature of nature as it was raise to Earth by Hera, one of Zeus’s wife. Its sole purpose was to kill Hercules as part of his 12 labors. In the second labor, Hercules was tasked to kill Hydra. However, the beast had the ability to regrow any of the heads that Hercules had cut off. Finally, Hercules recruited the help of his cousin, Iolaus, who came up with the idea of burning the stump after the head was cut off. This idea worked and Hercules won.