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Wednesday, July 11, 2012

Black Rhinoceros

 
Beauty Of Animal | Black Rhinoceros | The name black rhinoceros (Diceros bicornis) is chosen to distinguish this species from the white rhinoceros (Ceratotherium simum). This can be confusing, because the two species actually differ according to color. There are four subspecies of black rhino: South-central (Diceros bicornis minor), the most numerous, which once ranged from central Tanzania south through Zambia, Zimbabwe and Mozambique to northern and eastern South Africa, South west (Diceros bicornis bicornis) which are better adapted to arid and semi-arid savannas of Namibia, southern Angola, western Botswana and western South Africa, East African (Diceros bicornis michaeli), mainly in Tanzania ; and West African (Diceros bicornis longipes) which was declared extinct in November 2011. The native name Keitloa Tswanan be used to describe the diversity of South African black rhino in the posterior horn equal to or longer than the anterior horn.
The adult black rhinoceros stands 150-175 cm (59-69 in) high at the shoulder and from 3.5 to 3.9 m (11-13 ft) long. An adult weighs from 850 to 1600 kg (1,900 to 3,500 lb), exceptionally to 1800 kg (4,000 lb), with women less than men. Two horns on the skull are made of keratin with the larger front horn typically 50 cm long, exceptionally up to 140 cm. Sometimes, the third smaller horn may develop. The black rhino is much smaller than the white rhino, and has a pointed mouth, which they use to grasp leaves and twigs when feeding. During the second half of the 20th century their numbers are severely reduced from an estimated 70 000 in the late 1960s to 2410 only in 1995

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