Colchian dragon

In Greek mythology, the Colchian dragon (Greek: Δρακων Κολχικος, Drakon Kolkhikos, "dragon of Colchis") was a large serpent who was a child of Typhon and Echidna. This dragon never slept and, thus, was set to guard the golden fleece in the sacred grove of Ares at Colchis.

In order for Jason to retrieve the golden fleece from the dragon, Medea used her magic and herbs to put the dragon to sleep or Orpheus lulled it to sleep by playing music with his lyre.

The teeth of the dragon were harvested by the king of Colchis, Aeetes. After Jason sowed the teeth into a sacred field of Ares, a tribe of Spartoi sprang up from the earth.