Sleeping Arctic fox

© Menno Schaefer/Getty Image

What does the fox dream?

We're sure you could just squeeze this snoozing Arctic fox like a stuffed animal, but we wouldn't advise it. These cute little fuzzballs can be ferocious hunters. In fact, the Arctic fox is one of the most prolific predators on the tundra, preying on lemmings, voles, rabbits, birds (often with a side of eggs), and other small critters that cross its adorable path. But right now, our Arctic fox is happy to curl up with its tail and get some shut-eye—by forming a ball with its body, the fox is exposing the least possible surface area to cold air, helping to conserve heat no matter how low the mercury dips.