Dragons in Greek mythology placed it in the heavens as the constellation Cancer. After slaying the serpent, Heracles buried the immortal head under a rock and dipped his arrows in the creature's blood to make them fatal to his enemies. In one version, the poisoned arrows would eventually prove to be the undoing of his centaur tutor Chiron, who was placed in the heavens as the constellation Centaurus. In Greek mythology Python was the earth-dragon of Delphi, always represented in the vase-paintings and by sculptors as a serpent. Various myths represented Python as being either male or female (a drakaina). Python was the chthonic
Drakaina (mythology) generally slain only by gods or demigods. Zeus slew Delphyne and Campe, Apollo slew Python, and Argus Panoptes slew Echidna. Echidna was the mother of a huge brood of monsters, including other dragon-like creatures. According to Hesiod, Echidna gave birth to Cerberus, Orthrus, the Chimera, the Nemean lion, the Sphinx and the Hydra. (Other ancient authors, such as Hyginus, attribute even more monsters as children of Echidna such as the Caucasian eagle, the Crommyonian Sow, the Colchian dragon, the Harpies and Scylla.) Drakaina (mythology) In Greek mythology, a drakaina () is a female serpent or dragon, sometimes with humanlike features.