The winged horse in Greek mythology that sprang from Medusa’s blood was Pegasus.
Pegasus was born when the hero Perseus decapitated Medusa. Ancient myth also names him as the son of Poseidon, who fathered him in the god’s horse-associated form. Pegasus emerged alongside Chrysaor, a warrior or giant who was Medusa’s other child.
The hero Bellerophon later captured Pegasus with help from Athena or Poseidon and rode him against the fire-breathing Chimera. Bellerophon’s attempt to fly to Mount Olympus ended when he fell from the horse, while Pegasus continued upward and was eventually associated with Zeus and the heavens.
Pegasus is often confused with the hippogriff, a later European hybrid of horse and eagle, or with unicorns, which do not have wings. In another famous myth, Pegasus struck Mount Helicon and created the spring Hippocrene, sacred to the Muses.