Sudan is two of a handful of northern white rhinos left worldwide . As the only male , the fate of the subspecies rests on his ability to conceive with one females at a conservancy . Experts are trying various ways , including in vitro fertilization .
Sudan is one of a handful of northern white rhinos left worldwide . As the only male , the fate of the subspecies rests on his ability to conceive with two females at a conservancy . Experts are trying various ways , including in vitro fertilization .