Carnivorous plants conjure up images of triffids, or of Audrey II eating its way through the human species in Little Shop of Horrors. But some plants genuinely have made the leap from eating sunlight to dining on animal protein! The most famous is the Venus flytrap, which catches whatever unlucky insect happens to land in its "mouth." Then, the flytrap hermetically seals its lobes together to form a makeshift stomach. It's hard out there for a bug.