The duck-billed platypus is a semiaquatic egg-laying mammal found in eastern Australia and Tasmania. It has a duck-like bill, webbed feet, a flat tail, and produces venom from ankle spurs. The platypus lays eggs and feeds its young milk through patches of skin. It lives in burrows near freshwater lakes and rivers, feeding on aquatic invertebrates and larvae. Though once hunted, the platypus is now a protected species.