18 of the strangest animals ever

Who needs clothes?
Naked mole rats are anything but attractive. Their squirmy, fleshy, wrinkly bodies resemble hairless cats, but with longer teeth.

As it turns out, this physique is rather beneficial to the mole rat lifestyle. The rodents dig underground burrows where they live in colonies, and because they rarely see the sun, they don't need to grow a protective layer of hair.