This book is part of a book series called Unsolved Mysteries .

This book has been graded for interest at 11-17 years.

There are 114 pages in this book. This book was published 2012 by Essential Library .

Christine Zuchora-Walske studied literature, communications, and publishing at the University of Notre Dame and the University of Denver. She has been writing books and magazine articles for 20 years. In addition to animal titles, she has written books on history and current events. Her books have made appearances on the IRA Teachers' Choice list and the NSTA/CBC Outstanding Science Trade Books for Students list.