A Smithsonian documentary will feature Kaavan, dubbed the "world's loneliest elephant," who Cher greeted Monday in Cambodia after her charity's rescue flight. Kaavan was sent to Pakistan more than three decades ago as a gift from former Sri Lanka dictator Gen. Zia-ul-Haq. In 2012, his mate for 22 years, Saheli, died, leaving him alone for eight years and leading to him becoming known as "world's loneliest elephant." Grammy-winning singer Cher ...