Pygmy Raccoon. Christoph Moning, CC BY 4.0, via Wikimedia Commons The pygmy three-toed sloth holds the title of the world’s slowest mammal, and there is no disputing that it moves at a deliberately ...

The pygmy three-toed sloth was only described scientifically in 2001 and is Critically Endangered. Sloths used to be elephant-sized giants that roamed the earth alongside other prehistoric animals.