A newly established rhino anti-poaching unit poses for a group photo on May 4, 2018. The black rhino has been considered officially extinct in the country of Chad since the 1990's but due to an institutional cross-country collaboration between the Chadian and South African governments the black rhinoceros has returned to the country. Through a collaboration between conservation organization African Parks and South African National Parks, six rhinos where flown cross continent to be reintroduced to Zakouma National Park in Chad. / AFP PHOTO / STEFAN HEUNIS