Sloths appear defenseless, slow, and vulnerable in ecosystems filled with predators. Yet despite these disadvantages, they persist in environments where speed usually determines survival. Scientists ...

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 ...

One of the most popular animals around is the sloth. They are so relaxed and laid back, and they always look like they're smiling. They're also very slow, which makes getting anywhere a long process.