female white rhino stands by lying down calf, eats savannah grass in south africa

white rhinoceros rhino horn kruger national park rhinoceros white rhino wide rhino rhino ceratotherium simum poaching south africa endangered wildlife endangered species big five conservation pachyderm savanna kruger safari africa herbivore savannah animal african horned mammal horn animal themes female eating large grasslands wilderness wild big reserve nature dangerous keratin grass one face national grasses south outdoors white black