The book, Ten Little Caterpillars, is fun for small children just catching on to the colors, not the animal. It has great appeal to young children, similar to Eric Carle's previous book with colors "Who are you?" Because the two books are similar with animals of different colors than normal they could be used together or separately. The size of the book is large and the illustrations are just as large. This is a book that calls for a child to page through by himself after being exposed to the text.