Water Buffalo - Kruger National Park, South Africa.water buffalo (Bubalus bubalis), also called arni, either of two forms, wild and domestic, of Asian mammal similar to the ox. There are 74 breeds of domestic water buffalo numbering some 165 million animals, but only small numbers of wild water buffalo remain. Wild water buffalo is a huge animal, nearly 3 metres (10 feet) long and 2 metres tall and weighing up to 1,200 kg (2,600 pounds)