The Black Rhinoceros Diceros bicornis is basically grey, but the colour varies from yellow-brown to dark brown according to local soil conditions. It has two horns, although occasionally a third small posterior horn is present. The anterior horn is larger than the posterior, averaging 50 cm in length.13 Distinguishable from the White Rhino mainly by the protruding upper lip, (hence the alternative name of hook-lipped rhino), it is not always darker in colour. The Black Rhino is a browser using its upper lip to feed on regenerating twigs of woody growth and legumes.13
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