Gr 4-7 Answers to 50 commonly asked questions, such as why cats go into ecstasy over catnip, how squirrels locate buried nuts, and why woodpeckers don't get headaches when pecking wood. The writing is readable and scientifically accurate, scientific terms are italicized, and see references help children find related information. A classification chart of those vertebrates covered in the book precedes the first question. This book offers more complete answers to fewer questions than Seymour Simon's 101 Questions and Answers About Dangerous Animals (Macmillan, 1985), which follows a similar format. Some prior scientific knowledge may be necessary to fully appreciate the answers, yet even younger readers will be able to comprehend them. The book is suitable for browsing or, because of the detailed table of contents and its arrangement in descending hierarchical order from mammals to fish, report writing. Pam Spencer, Thomas Jefferson High School for Science and Technology, Fairfax County, Va.