Dragons in Greek mythology guarded the Golden Fleece at Colchis. It was said to never sleep, rest, or lower its vigilance. According to Ovid's "Metamorphoses", the monster had a crest and three tongues. When Jason went to retrieve the Fleece, the witch Medea put the dragon to sleep with her magic and drugs, or perhaps Orpheus lulled it to sleep with his lyre. Afterwards, Medea herself had dragons pull her chariot. The Ismenian Serpent, of the spring of Ismene at Thebes, Greece, was slain by the hero Cadmus. It was the offspring of Ares, who later turned the hero into a serpent. According to
Ancient Greek religion quest for the Golden Fleece and Theseus and the Minotaur. Many species existed in Greek mythology. Chief among these were the gods and humans, though the Titans (who predated the Olympian gods) also frequently appeared in Greek myths. Lesser species included the half-man-half-horse centaurs, the nature based nymphs (tree nymphs were dryads, sea nymphs were Nereids) and the half man, half goat satyrs. Some creatures in Greek mythology were monstrous, such as the one-eyed giant Cyclopes, the sea beast Scylla, whirlpool Charybdis, Gorgons, and the half-man, half-bull Minotaur. There was not a set Greek cosmogony, or creation myth. Different religious