Both black and white rhinoceroses are actually gray. They are different not in color but in lip shape. The black rhino has a pointed upper lip, while its white relative has a squared lip.

Imagine standing in front of a gentle giant whose kind once roamed vast African plains in great numbers, only to realize you ...

Both black and white rhinoceroses are actually gray. They are different not in color but in lip shape. The black rhino has a pointed upper lip, while its white relative has a squared lip.

AP Photo/Sunday Alamba When Sudan, the world’s last male northern white rhino, died in March at a wildlife preserve in Kenya, it seemed to signal the end of his kind. But it might not be over yet.