Photo taken on March 20, 2017 shows 10-year-old male Sumatran rhinoceros Harapan walking in Sumatran Rhino Sanctuary in Way Kambas National Park in Lampung, Indonesia. Sumatran rhinoceros is threatened with extinction by poaching for horn and shifting of its habitat to palm oil plantation, mining and illegal logging activity. (Xinhua/Agung Kuncahya B.)