Pegasus (or Pegasos) is a winged-horse which was fathered by Poseidon and was born from the severed neck of the gorgon Medusa, slain byPerseus. At the same time and in the same way, Chryasor was also born. Poseidon gave Pegasus to his son Bellerophon who put Pegasus to good use in his famous battle with the Chimaera.
The myth of Bellerophon begins with the hero visitingTiryns and
THE HERO BELLEROPHON RODE AND FLEW PEGASUS AND MANAGED TO KILL THE MONSTROUS CHIMAERA WITH HIS SPEAR.
Bellerophon and Pegasus went on to enjoy further success with other challenges Iobates set the hero including a battle with the Amazons. However, becoming rather boastful and thinking he could fly high enough on his winged steed to take his place amongst the immortal gods, Bellerophon was thrown by Pegasus and fell unceremoniously back to earth. Meanwhile, Pegasus kept on going and on reaching Mt. Olympus, he was given to Eos who was responsible for bringing Dawn across the sky each day. According to Hesiod in his Theogony, Pegasus also brought Zeus his thunder and lightning whenever needed.
Pegasus is also credited with creating a number of springs with a stamp of his hoof. Most famous of these were the Hippocrene spring on Mt. Helicon, close to the grove sacred to the Muses, and the spring at Troezen.