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All five species of rhinoceros can grow to weigh over 1000 kg (2200 lb). White rhino can weigh over 3500 kg (7700 lb). White rhinoceros are generally considered the second largest land mammal (after the elephant).
Rhinoceros horns are made from a protein called keratin, the same substance that fingernails and hair are made of, and is not medicine, contrary to belief.
Spotted on Nov 6, 2011
Submitted on Aug 16, 2012
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