This hardbound edition of the popular paperback with the same title is designed for libraries, schools, and other organizations that lend books. It does not contain the interactive games in the back of the paperback. Its target audience is ages 7-12, but older students and adults have praised it as well. The feedback from teachers who have tested this book in their classrooms has been phenomenal. Some students formed their own contests, completing the workbook games and sharing the bizarre facts they learned about animals. OUT ON A LIMERICK will suck you in before you hit page 1. Check out the Rules for Reading Limericks with safety measures to avoid limerick reading related injuries. It is a completely unique book of Laughable Limericks and Fun Facts About Animals .