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The Sumatran Rhinoceros (Dicerorhinus sumatrensis) is a species of the family Rhinocerotidae, and one of five extant rhinoceri. It is the smallest rhinoceros, standing about 120–145 centimetres (3.9–4.8 ft) high at the shoulder, with a body length of 250 centimetres (98 in) and weight of 500–800 kilograms (1100–1760 lb). Like its African counterparts, the black and white rhinoceri, it has two horns; the larger is the nasal horn, typically 15–25 centimetres (6–10 in), while the other is typically a stub. A coat of reddish-brown hair covers most of the rhino's body. Members of the species once ranged throughout rainforests, swamps and cloud forests in India, Bhutan, Bangladesh, Myanmar, Laos, Thailand, Malaysia, and Indonesia. They are now critically endangered, with only six substantial populations in the wild: four on Sumatra, one on Borneo, and one on peninsular Malaysia. Their numbers are difficult to determine because they are solitary animals that are widely scattered across their range, but they are estimated to number around just 300. The decline in the number of Sumatran rhinoceri is attributed primarily to poaching for their ivory horns, which are highly valued in traditional Chinese medicine, fetching as much as US$30,000 per kilogram on the black market. The rhinos have also suffered from habitat loss as their forests have been cleared for lumber and conversion to agriculture.