Today is World Rhino Day, and to celebrate we"re in South Africa, the home of the majority of the planet"s white rhinos. In the wild, these majestic animals are grazers, with wide, square upper lips perfect for feeding on the grasses of African savannahs. The two-horned white rhino is one of five living rhino species, along with the black, greater one-horned, Sumatran, and Javan rhinos. White rhinos, like the mother and offspring you see nuzzling here, have seen their numbers dwindle due to poaching and shrinking natural habitats.