Pronghorn (Antilocapra americana), male running in prairie, Yellowstone National Park, Wyoming, USA

america american americana animal animals antelope antelopes antilocapra artiodactyla buck bucks day daylight daytime during even even toed exterior exteriors fauna in kingdom male mammal mammalia mammalian mammalians mammals national nature nobody north of outdoor park photo photos prairie prong pronghorn pronghorn pronghorns ruminant ruminantia ruminants running shot shots states tetrapod the toed toed ungulate ungulates united us us american usa vertebrata vertebrate vertebrates wild wildlife world wyoming yellowstone