Cage door believed partially open when lion escaped and killed Calif. zoo worker

Zumapress / AP Four-year-old lion ‘Cous Cous'(left) escaped its cage and killed Dianna Hanson, 24, (right) in California Thursday. DUNLAP, Calif. — The investigation into a lion attack that killed a 24-year-old woman who loved big cats is focusing on a cage door that the 550-pound animal managed to escape through…