Hippo (Hippopotamus amphibius) yawning, Chobe National Park, Botswana, Africa

africa african amphibius animal animals area areas artiodactyla botswana botswanan chobe conservation day daylight daytime during even even toed exterior exteriors fauna head heads hippo hippopotami hippopotamus hippopotamuses hippos kingdom mammal mammalia mammalian mammalians mammals national national natural nature nobody outdoor park park parks photo photos portrait portraits preserve preserves reserve reserves sanctuaries sanctuary shot shots tetrapod tired tiredness toed toed ungulate ungulates vertebrata vertebrate vertebrates wild wildlife world yawn yawning yawns