One was seen climbing 20ft up a tree, which had to be shaken to force it to descend, only for it to scale even higher and tighten its grip. The sloth moved to another tree, making it more ...

But as the planet cooled again, sloths began to bulk up. The largest ground sloths emerged during the Ice Ages. Big bodies ...

The sloth family tree once sported a dizzying array of branches, body sizes and lifestyles, from small and limber tree climbers to lumbering bear-sized landlubbers. Why sloth body size was once so ...

"Despite being iconic species, comprehensive long-term population monitoring simply hasn't been conducted at a scale that reflects the true challenges sloths face," lead researcher Rebecca Cliffe ...

There is a considerable lack of data on the current status and abundance of sloths. No comprehensive, long-term population monitoring has been conducted at a scale that reflects the true ...

For centuries, people encountering sloths for the first time have reacted by ridiculing them. In 1526, Spanish conquistador Gonzalo Fernández de Oviedo y Valdés wrote that the sloths he’d seen ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Central and South America’s sloth populations may face a dire ...