The most important thing about Rhinoceroses is that the Black and white rhinoceroses are actually gray. The Rhinoceroses are different not buy the color but from lip shape. The black rhino has pointed upper lip and the white rhino has it square lip. The difference in lip shape is related to the animals diets. The Black rhinos are browsers that get most of their sustenance from eating trees and bushes. But the most important thing about rhinoceroses is that the Black and white Rhinoceroses are actually gray.