17. Tardigrade

How can you not love a tiny creature that looks like it’s wearing a spacesuit and just walks around forever? Cute as they seem, these extremely small guys are the toughest animals on this planet. Basically, tardigrades can go on with their lives as usual in solid ice, boiling water and space radiation.

It can survive in the desert too. Or in sea trenches. You name it, they survive it! The secret of these micro-animals is that they can dry out entirely. This means that it replaces the water from its body with a sweet substance named trehalose. In other words, tardigrades have been on Earth before mankind and will stay here probably much longer than our species.