This book is part of a book series called National Geographic Kids Chapters .

This book has been graded for interest at 8-12 years.

There are 112 pages in this book. This is a chapter book. Publishers market early chapter books at readers aged 6-10 years. This book was published 2012 by Turtleback Books .

BRADY BARR is a resident explorer with National Geographic with books, articles, and TV shows listed under his many credits. He once used his smelly sock to close up a snake's mouth to take a photo. KATHY ZOEHFELD is a reptile expert. She has been writing and editing children's books for over thirty years. KATHLEEN WEIDNER ZOEHFELD has been a children's books editor and writer for thirty years and have always kept one eye on curriculum needs, especially in science. She has written other books in the National Geographic Kids Readers series including, Dinosaurs and Rocks and Minerals .