White rhinoceros grazes in the arid environment of the Kalahari

white rhinoceros grazing arid dry environment kalahari close up white rhino huge big horns bushes white rhinocerros mighty wildlife horn endangered poaching rhino horn africa ceratotherium rhino animal mammal park wild big african reserve south national nature outdoors safari species large wilderness conservation strong poached dangerous horned herbivore eyes vertebrate hunted squarelipped simum big five