Many grazing animals, such as this Square-lipped (or White) Rhinos (Ceratotherium simum) , only eat grass, and if possible, drink water twice a day. This magnificent male Square-lipped Rhino approached a concrete drinking trough in Kruger National Park, only to find it empty. He then moved to the shallow pond nearby, his hide covered in thousands of blood-sucking, biting flies called Clegs, and with two Yellow-billed Oxpeckers (Buphagus africanus) gleaning him for parasites. Oxpeckers often annoy their hosts by probing into sensitive areas such as nostrils and ears in search of prey. The Rhino shook his head to rid himself of the annoying Oxpeckers. He hesitated at the edge for a while, then entered the water and began to drink, only to be disturbed by a thoughtless person starting their noisy engine. Shortly after this a pair of Egyptian Geese (Alopochen aegyptiaca) and their goslings swam by.