Mature & young Musk-ox bulls and cows in a defensive lineup during winter on the Seward Peninsula near Nome, Alaska

outdoor cow animal mammal grass cattle horn field bull bovine sky herd goat brown standing deer sheep livestock dairy cow grazing ox yak elephant terrestrial animal snow antelope antler reindeer elk pasture herding farm bison texas longhorn highland rhinoceros looking white rhinoceros pig sumatran rhinoceros indian rhinoceros elephants and mammoths hippopotamus indian elephant musk ox bear barren ground caribou white-tailed deer black tailed deer fawn roe deer buck tree hill plant hillside forest sunset savanna grassy sun group safari background green camel ecoregion lush sunrise distance clouds day several close staring