A pygmy three-toed sloth swims between mangroves on the island of Escudo in BBC One's Planet Earth II.

When people think of swimming animals, fish or dolphins usually come to mind. However, several land animals that can swim ...

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 ...