Elasmotherium vs brontotherium, elasmotherium vs woolly mammoth, entelodont vs andrewsarchus, short face bear vs woolly rhino, and megatherium vs mastodon.
all prehistoric animals from smallest to largest Homotherium Dire wolf Cave lion Smilodon Glyptodon Terror bird Entelodon Hyaenodon Megalania Cave bear Short faced bear Woolly rhino Arsinoitherium Megatherium Elasmotherium North American mastodon Woolly mammoth Steppe mammoth Paraceratherium