Nearly the entire population of this species, as much as 98.8%, is concentrated within South Africa, Namibia, Zimbabwe and Kenya. White rhinos are represented by 2 genetically different sub-species: the Northern White rhino sub-species and the Southern White rhinos. The former of these used to inhabit north-central Africa, regions south of the Sahara. Currently, the Northern White rhino sub-species is restricted to the Garamba National Park in Democratic Republic of Congo (DRC). The other, Southern White rhino, sub-species is endemic to southern regions of Africa. Preferred types of habitat are grasslands and open savanna woodlands. Overall, White rhinos favor flatland terrains, dominated by bushes. These grazers constantly need areas with grass as well as water to drink and wallow in. Hence, White rhinos are sometimes seen in swampy habitats.