Ten little caterpillars are out and about in our big wide world--come join them! You never know what you might find. . . . A butterfly perhaps? <p/>Readers of all ages have celebrated the work of Bill Martin Jr and Lois Ehlert ever since their first collaboration on <i>Chicka Chicka Boom Boom</i> 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 comes complete with a glossary filled with intriguing information about all of the caterpillar stars!