The human species has long admired strength and power. While we push beyond our own physical capabilities, using science and technology, the animal kingdom has evolved their bodies to achieve incredible things that humans simply dream of. Ask an engineer to build a robot that flies. No problem. Ask to build a robot that can climb like a leopard, and it's far beyond our ability. A simple animal like the dung beetle can push a prize hundreds of times its own weight across a burning desert. And one look at the armored skin of the rhino justifies why a group of them are called a 'crash.' Meet some of nature's toughest!