White rhinos are the second-largest land mammal - also known as the square-lipped rhinoceros, white rhinos have a square upper lip with almost no hair. After more than a century of protection and management, they are now classified as Near Threatened and around 18,000 animals exist in protected areas and private game reserves. They are the only of the five rhino species that are not endangered.
Black rhinos are smaller than white rhinos, and have less of a pronounced hump on the back of their necks. They also have a smaller head, as unlike the white rhino, they are browsers, so eat from higher bushes or trees, requiring less muscle strength around their necks than white rhinos. The most distinguishable characteristic between a black and a white rhino is that black rhinos have a hooked lip, as opposed to a flat-based lip, which is related to their eating habits. They are critically endangered due to habitat loss and poaching, and there are only somewhere in the region of 5,500 left.
