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Dicerorhinus sumatrensis


The Sumatran, a.k.a. the hairy rhino, Dicerorhinus sumatrensis, is probably the most endangered of all rhinoceros species. Numbers have declined over 50% due to poaching over the last 15 years. Fewer than 300 Sumatran Rhino survive in very small and highly fragmented populations in Southeast Asia with Indonesia and Malaysia being the only significant range states. Furthermore, there is no indication that the situation is showing any signs of stabilizing.

Common Names

  • Sumatran Rhinoceros
  • Asian Two-Horned Rhinoceros: the only two-horned rhino in the Asian region.
  • Hairy Rhinoceros: refers to the long, shaggy hair found on the species in contrast to the other species which appear hairless.

Scientific Name and Origin

  • Dicerorhinus sumatrensis
  • Dicerorhinus: from the Greek di, meaning "two"; cero, meaning "horn" and rhinus, meaning "nose"
  • sumatrensis: referring to Sumatra (with the Latin -ensis, meaning locality)

Current Sumatran Rhino Numbers and Distribution

There are currently approximately 300 Sumatran Rhinos surviving.

 

Click for large Sumatran Rhino distribution map
 

Sumatran Rhino distribution map

 
 

Physical Characteristics

Size

  • Weight: 1,300 - 2,000 lbs (600 - 950 kg)
  • Height: 3 - 5 ft (1.0 -1.5m) tall at shoulder
  • Length: 6.5-9.5 ft (2.0-2.3m) length of body

Horn

  • There are two horns. The front (anterior) horn is larger and measures 10 - 31 in. (25-79 cm) long. The second horn is smaller, generally less than 3 inches (10 cm).

Other Features

  • Fringed ears and reddish-brown skin, variably covered with long hair (sparse to sometimes dense).

Natural History

Subspecies

IRF Programs in Asia

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