Rhinoceros can be divided into five species. But most popular are While Rhinoceros which is known as Square-lipped rhinoceros and fall into the genus (Ceratotherium simum) and white rhinos are the most social among the others. White rhinos are again divided into two sub species, one is Southern White Rhinoceros and the other is Northern White Rhinoceros. Rhinos have a big mouth for grazing. White Rhinos are the second largest animal in the world after elephant. White Rhino's body length is 3.4 to 4.2 m (11 to 14 ft), with the tail adding another 50 to 70 cm (20 to 28 in). Its shoulder height is 1.5 to 1.9 m (4 ft 10 in to 6 ft 3 in).It is 1,360 to 3,630 kg (3,000 to 8,000 lb) in weight.