It’s hard to believe that this menacing-looking creature, armed with bone-crushing pincers and a rugged exoskeleton, would ever have difficulty defending itself. Known to grow to the size of a small dog and live to 40 years old, the Tasmanian Giant Freshwater Crayfish (also known as the giant lobster) is the largest of its kind in the entire world, but it's under immediate threat. The normally pristine streams it calls home are being polluted by sediment runoff from logging. The Government is no