Dragons in Greek Mythology

Cadmus and the Dragon
Cadmus was a Phoenician prince who founded the city of Thebes in Greece. Near the site of the where he was to build Thebes, Cadmus and his companions found a sacred grove guarded by a dragon. After the beast killed his companions, Cadmus slew the dragon and, on the advice of the goddess Athena, planted its teeth in the ground.

Cerberus
Cerberus was a three-headed, dragon-tailed dog that guarded the entrance to the lower world, or Hades.

Chimera
Chimera, a fire-breathing monster that had the head of a lion, the body of a she-goat, and the tail of a dragon. It terrorized Lycia, a region in Asia Minor, but was finally killed by the Greek hero Bellerophon.

Hesperides
The daughters of the Titan Atlas or of Night. Aided by a dragon, the Hesperides guar ded a tree, with branches and leaves of gold, which bore golden apples.