Stephen R. Swinburne is the creator of the concept books Lots and Lots of Zebra Stripes: Patterns in Nature; Guess Whose Shadow?; What's a Pair? What's a Dozen?; What's Opposite?; and What Color Is Nature? He has worked as a naturalist and a ranger in several national parks, and is the author of a number of books on wildlife, including Coyote: North America's Dog, and Bobcat: North America's Cat. He lives with his family in Londonderry, Vermont.