Leo (constellation) Babylonian astronomy, the constellation was called UR.GU.LA, the "Great Lion"; the bright star Regulus was known as "the star that stands at the Lion's breast." Regulus also had distinctly regal associations, as it was known as the King Star. In Greek mythology, Leo was identified as the Nemean Lion which was killed by Heracles (Hercules to the Romans) during the first of his twelve labours. The Nemean Lion would take women as hostages to its lair in a cave, luring warriors from nearby towns to save the damsel in distress, to their misfortune. The Lion was impervious to any weaponry;
Leo the Lion (MGM) as the religious epic "King of Kings" (1961), "Zebra in the Kitchen" (1965), "Fluffy" (1965), and "Napoleon and Samantha" (1972); as well as a memorable TV commercial for Dreyfus Investments in 1961. Leo also made several appearances on the 1971-72 TV series "The Pet Set", proving himself gentle enough to let a blind teenage girl pet him in one episode. Two different versions of this logo were used: an "extended" version, with the lion roaring three times (used from 1957–1960); and the "standard" version, with the lion roaring twice (used since 1960). In the Chuck Jones-directed "Tom and Jerry" cartoons