Rhinoceroses are some of the largest remaining megafauna: all weigh over half a tonne in adulthood. They have a herbivorous diet, small brains 400â600 g (14â21 oz) for mammals of their size, one or two horns, and a thick 1.5â5 cm (0.59â1.97 in), protective skin formed from layers of collagen positioned in a lattice structure. They generally eat leafy material, although their ability to ferment food in their hindgut allows them to subsist on more fibrous plant matter when necessary. Unlike other perissodactyls, the two African species of rhinoceros lack teeth at the front of their mouths they rely instead on their lips to pluck food. Original Vector Art Copyright BluedarkArt TheChameleonArt.
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