And if you simply must have a massive mammal for your daily #megafauna, consider the largest bear ever: #arctotherium. Emerging between 4.9 and 1.8mya in South America, it stood 11ft tall and could weigh over 3000lbs.

More #carnivorous than its extant relative, the spectacled bear, arctotherium's intimidating size allowed it to eat giant sloths and glyptodons by chasing more agile predators off their kills. It died off ~0.5mya, likely due to increased competition and changing climates.