Sloths are best known for sleeping — according to National Geographic, the three-toed wonder is the world’s slowest mammal and is so sedentary that algae grows on its furry coat. So what better ...

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Would a sloth make a good astronaut? Probably not, but it’s damn cute to watch one try. This little creature headed to NASA’s Human Exploration Research Analog (HERA) for International Sloth Day, a ...

Oct. 20 is International Sloth Day, but every day is a good day to learn more about one of the coolest animals on the planet. The small cuddly sloths of today were not so adorable a few million years ...