Butterflies soar in the sunlight while moths flutter under the moon and stars. Find out more about these mysterious and majestic insects' similarities and differences, and their awe-inspiring metamorphosis! From the creator of the New York Times bestseller Women in Science, Rachel Ignotofsky, What's Inside a Caterpillar Cocoon? is the perfect book for young scientists who want to grow by nurturing their curiosity about the natural world.