Rolling Snakes Reinvent The Wheel

For eons, roly-polies have rightfully dominated the rolling space, at least in our imagination. The crustaceans' astonishing ability to transform from a legged arthropod into a perfect sphere, a behavior called volvation , earned the bugs their nickname. But the bugs are far from the only rollers in the animal kingdom. Pangolins , hedgehogs , echidnas , and armadillos do it too, curling up their b