![]() Skin color depends more on local soil conditions and the rhinoceros' wallowing behavior than anything else, so many black rhinos are typically not truly black in color. These horns are used for defense, intimidation, and digging up roots and breaking branches during feeding. Sometimes, a third smaller horn may develop. The longest known horn measured nearly 1.5 m (4.9 ft) in length. Two horns on the skull are made of keratin with the larger front horn typically 50 cm (20 in) long, exceptionally up to 140 cm (55 in). An adult typically weighs from 800 to 1,400 kg (1,800 to 3,100 lb), however unusually large male specimens have been reported at up to 2,199–2,896 kg (4,850–6,380 lb). Īn adult Black Rhinoceros stands 132–180 cm (52–71 in) high at the shoulder and is 2.8–3.8 m (9.2–12 ft) in length, plus a tail of about 60 cm (24 in) in length. On Novemthe IUCN declared the Western African Black Rhinoceros extinct. In 2006 an intensive survey across its putative range in Cameroon failed to locate any, leading to fears that it was extinct in the wild. The last known wild specimens lived in northern Cameroon. West African ( Diceros bicornis longipes) once lived across the savanna belt in western Africa.Today, its range is limited primarily to Tanzania. ![]()
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