Hippopotamus (Hippopotamus amphibius), measuing their strength in a threat display, Orangi River, Serengeti, Tanzania, Africa

africa african aggression aggressions aggressive amphibius animal animals area areas artiodactyla battle battles bodies body conservation day daylight daytime display during even even toed exterior exteriors fauna fight fighting fights heritage hippo hippopotami hippopotamus hippopotamuses hippos in kingdom male males mammal mammalia mammalian mammalians mammals measuing moraceae morus mulberries mulberry national natural nature nobody of open opened openly orangi outdoor park parks photo photos preserve preserves reserve reserves river river rivers sanctuaries sanctuary serengeti shot shots site sites snout snouts strength struggle struggles tanzania tetrapod the their threat toed toed two unesco ungulate ungulates vertebrata vertebrate vertebrates water waters wild wildlife world world