Ungulates
These are the mammals that stand and walk on the tip of their toes. 10,000 years ago in the Americas it was common to find huge mastodons, relatives of the elephants that live nowadays in Africa. There were also horses like Hippidion – but they became extinct way before the Spaniards brought the living horses from Europe – and other ungulates like Toxodon, one of the strangest animals from the megafauna that lacks modern relatives.