Information about Rhinoceros:
Rhinoceros are large herbivorous land mammals of the order Perissodactyla. They are found only in Africa and small areas of Asia, where the three species – the Javan, Sumatran and Indian are all endangered. The African species are not as at risk as the Asian rhinos, but some subspecies like the Eastern Black Rhino are close to extinction. Rhinos are characterized by their thick hides, which is formed by collagen and their horns, which are made of keratin and are highly valued in Asian medicine as a cure for a variety of ills (although there exists no hard proof that rhino horns have any medicinal properties beyond the imagination of the people who buy and sell them.)
They have relatively small brains for their size. The African rhinos and the Sumatran have two horns, whereas the Indian and Javan have only one. In an attempt to discourage poachers, conservationists and park rangers have taken to removing the horns from adults.
The largest of the rhinos is the White, which can exceed 7,700 pounds (3,500 kg) with a head-and-body length of 11-15 feet (3.5–4.6 meters) and a shoulder height of 5.9-6.6 feet (1.8–2 meters.) The Sumatran is the smallest of the extant rhinos reaching 51 inches at the should (130 cm) (51 in) a body length of about (94–124 inches (240–315 cm) and weighing around 1,500 pounds (700 kg)