Eurystheus ordered Herakles to bring him the Horses of King Diomedes of Thrace. King Diomedes' horses were savage man-eaters, and were fed on the flesh of Diomedes' innocent guests. Herakles and his friends sailed to the coast of Thrace. Having found the stables of Diomedes, they killed the king's servants. They then put Diomedes before the horses. The animals tore him to pieces and ate him. The horses grew calm after feeding, and were led to the ship. Herakles sent them to Eurystheus.