Few stories as simple as Carles cherished 1969 classic are as engaging or as visually beautiful. As the author recounts the little caterpillars quest for a fulfilling meal, small children are not only enthralled but also given the opportunity to practice counting, as well as learning about a caterpillars transformation into butterfly; its the perfect marriage of entertainment and education. Carles distinctive collage style of illustration makes the tale all the more memorable. The book, which has sold millions of copies worldwide, is easily one of the most classic childhood stories.