<i>Jack Hanna Big Book of Why Animals</i> answers the why and did you know questions about all kinds of animals that kids commonly ask, but adults can rarely answer. What's the difference between a crocodile and an alligator? Why do animals' eyes glow in the dark? Why do cats purr? Written in an informative, engaging manner, each answer is accompanied by either a photo or an illustration to show the reasons why. Of course, Jack goes beyond answering the question, and dips into a combination of science, history and humor to further explain the answer in an easy-to-follow, straightforward manner. Jack Hanna Big Book of Why is a must-have book to satisfy the most curious of kids.