This book is simply great. It has helped my son (2 1/2) with counting and Identifying pictures and the concept of reading a book. The different size pages (and the holes) make the reading fun. Both of us laugh each time shut the caterpillar gets a stomach ache (sorry, there are spoilers for children's books?). I am Convinced That this is the first book my son wants to read to me from start to finish (BUT HE WAS STILL HUNGRY!). He loves it!