Hippopotamus (Hippopotamus amphibius), Okavango Delta, Botswana, Africa

hippopotamus hippopotamus amphibius okavango delta botswana africa hippopotamus hippo grazing grassland animal wildlife nature mammal africa wild herbivore vegetation water close up portrait eye mouth skin teeth tusk snout head neck body green lush fauna ecosystem natural habitat wild animals endangered species savanna swamp river lake wetlands zoology african wildlife african savanna