Ten little caterpillars are out and about in our big wild world—come join them! You never know what you might find....A butterfly, perhaps?

Readers of all ages have celebrated the work of Bill Martin Jr and Lois Ehlert ever since their first collaboration on Chicka Chicka Boom Boom more than twenty-five years ago. Now these two picture-book geniuses are together again in this dynamic and visually stunning counting-and-natural-history picture book that’s just perfect for reading aloud—and that comes complete with a glossary filled with intriguing information about all ten of the caterpillar stars.