The Lernaean Hydra is most closely associated with the legend of the second labor of Heracles and the story of the slaying of one of the most dangerous monsters in mythology. The Lernaean Hydra is also associated with the painter Gustave Moreau. He painted his renowned Hercules and the Lernaean Hydra, which depicted the slaying of the Lernaean Hydra at the hands of Heracles as ordered by King Eurystheus to atone for his sin. Other monsters and mythological creatures similar to the Lernaean Hydra are also found in different texts, especially in Sumerian, Babylonian, and Assyrian mythology. The mythology depicts the story of the celebration of Ninurta, who was credited with killing several monsters on his expedition to the mountains,