This book has been graded for interest at 4-8 years.

This book was published 2011 by Walker & Company .

Sandra Markle is the author of numerous award-winning books for children on a variety of science topics, including "Outside and Inside Birds, "an American Library Association Notable Book. She lives in New Zealand. LayneJohnson has illustrated a number of books for young readers, including "Ben, King of the River "by David Gilfaldi, and "On the Day His Daddy Left "by Eric J. Adams. He lives in Houston, Texas. "