Definition: The "duck-billed platypus" is a small animal that lives in water, mainly found in Australia and Tasmania. It has a unique appearance, featuring a broad, flat bill like a duck, a furry body, a tail, and webbed feet. It is a type of monotreme, which means it is one of the few mammals that lay eggs instead of giving birth to live young. The platypus is the only species in its family, called Ornithorhynchidae.