Giant sloths can weigh up to six tons, as much as elephants

Dozens of species lived across North, Central and South America,alongside other ancient creatures like mastodons and giant armadillos.Some ground sloths, like the megalonychid,were cat-sized,but many were massive.Jefferson's sloth, Megalonyx,weighed about a ton,and that was small compared to megatherium,which could reach six metric tons,as much as an elephant.They ambled through the forests and savannas using their strong arms and sharp claws to uproot plants and climb trees,grazing on grasses, leaves,and prehistoric avocados.