I know that the Greek god Hades of Hades had a three headed dog named Cerberus which is the corret spelling of it. He garded the gates of Hades (Greek Hell) and would distroy any of the dead who tried to return to land of the living and the same for the ones who were not dead that would try to enter Hades. Cerberus was a male and he had 2 siblings 1 was a three headed creature that was a lion, a goat and a dragon. The other was a 7 or 9 headed dragon I'm sure you can find their names on the enternet along with the parents of hte Greekmythology creatures. Cerberus is pronounced SUR brs.