What animal has the bill of a duck, the body of an otter, and the feet of a frog? It's the platypus, an ancient animal unlike any other on Earth! When scientists first saw the odd-looking creature, they thought it was fake. Readers will learn why in this scientific guide to platypuses, which covers the animal's unique body, special defense mechanisms, and how they've outlasted even the dinosaurs. Colorful images reinforce the content, while fact boxes, glossary, index, and supplemental websites provide opportunities for additional learning.