The Greek Myth Zeus and Callisto (his girlfriend) were on a walk when Hera (his wife) came out of nowhere. Zeus quickly turned Callisto into a bear to protect her from Hera. When Hera saw that he was alone, she asked him to come back. One day Callisto's son, Arcas went hunting. He saw the bear and shot an arrow. He saw that the bear was his mother and started crying. Zeus came down afraid Hera might hear his cries. He turned Arcas and his mother into bear constellations and placed them in the sky.