addax african buffalo alcelaphinae american bison animal antilocapridae antilopinae aurochs barbary sheep biological classification bison blackbuck bos boselaphini bovid bovinae brocket deer bubalus camel camelid capreolinae cervus cetartiodactyla chacoan peccary chevrotain choeropsis chordate collared peccary common duiker damaliscus deer dibatag dik-dik duiker eutheria even-toed ungulate four-horned antelope gaur gayal gazelle gerenuk giant forest hog giraffe giraffidae grazing antelope grey rhebok hartebeest hippocamelus hippopotamidae hippopotamus hippotragus hirola impala john edward gray klipspringer kouprey kting voar laurasiatheria mammal marsh deer moose moschiola mountain goat muntjac musk deer muskox neotragini neotragus nilgai odocoileus okapi oribi oryx ovis pampas deer peccary phacochoerus pig potamochoerus procapra pronghorn pygmy hog raphicerus reduncinae reedbuck reindeer roe deer ruminantia rupicapra saiga antelope saola steppe wisent strepsicerotini suidae suina tahr takin tamaraw taurotragus tibetan antelope tragelaphus tragulus tufted deer tylopoda water buffalo water chevrotain water deer white-lipped peccary wildebeest wisent yak