They had “very large claws on their forelimbs” and were “covered in thick hair,” the Illinois State Museum said.

This difference may reflect their respective ecological niches—koalas must process toxins continuously and thus may need to regulate their digestive load through periodic waking, while sloths face ...

This difference may reflect their respective ecological niches—koalas must process toxins continuously and thus may need to regulate their digestive load through periodic waking, while sloths face ...