Judy Hawes is the author of several other Let's-Read-and-Find-Out Science Books, including Why Frogs Are Wet , illustrated by Don Madden, and My Daddy Longlegs , illustrated by Walter Lorraine. She lives in Glen Rock, NJ.Ellen Alexander is the author-illustrator of Llama and the Great Flood , a picture book set in the Peruvian Andes. She lives in Ithaca, NY.