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 ...

A rare new resident has arrived at Edinburgh Zoo, and he’s already making quite the impression. Cipísek, a two-year-old sloth ...

Scotland’s first Sloth bear is settling in to his new home at Edinburgh Zoo. Cipísek, the two-year-old bear, arrived from ...

Tree sloths have reportedly survived falls of up to 100 feet. However, given that falls from even moderate heights can cause severe damage and some trees in the Amazon Rainforest top out at just ...

An analysis of the sloth family tree suggests three different groups of the animals evolved to gigantic sizes in response to cold and dry conditions. Close. Advertisement. Skip to content.

Scientists have analyzed ancient DNA and compared more than 400 fossils from 17 natural history museums to figure out how and why extinct sloths got so big.