Credit: Getty Images We all know that sloths are famously slow, and part of the reason is their muscle. They have about half the muscle mass of other animals their size, which makes walking almost ...

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 look slow in a way that almost doesn’t feel real, but their sluggish movement isn’t a flaw or a weakness. Every part of their body is built around saving energy, avoiding danger, and surviving ...