Leo, the lion:

One of the most ancient constellations in the night sky, and one of the most recognizable. The stars that make up this constellation easily form the outline of a lion. According to legend, Leo is the fierce Nemean lion that originated on the moon. The lion could not by killed by weapons, and as such terrorized the city of Nemea in ancient Greece. As one of his Twelve Labors, Hercules defeated the lion by strangling the beast with his bare hands. Zeus then returned the lion to space by placing his image among the stars. Leo is easily found by locating a group of stars that form the shape of a backward question mark and a small triangle of stars. Leo is located to the south of the Big Dipper.