Sloths appear to have life figured out, and once the details are revealed, being envious makes sense. These tree-dwelling mammals have survived for millions of years by doing things their own way, and ...

They just like to take it all in. When it comes to physical activity, few animals have as maligned a reputation as the sloth. The six sloth species, which call Brazil and Panama home, move with no ...

Sloths have made a name for themselves with one thing. That thing is their speed. Or, rather, their lack thereof. In the trees, everything they do looks like it takes an eternity. Stretching an arm ...

Conservation biologist Rebecca Cliffe fits an accelerometer backpack to a wild three-fingered sloth to measure its movement. The Sloth Conservation Foundation, CC BY-NC-ND Sloths are more vulnerable ...