Though maps and a few photographs are included, the book's strength lies in its absolutely glorious lifelike art illustrations. Each page boasts a wealth of illustrations, some of which appear on fold-out sections depicting the underground landscape of nests, burrows and tunnels. Summer habitats change to winter by means of a simple flip-up panel, while cut-out holes in the stiff paper pages help readers to view the hidden lives of burrowing animals, many of which are not well-known. Several cross-sections show the various chambers in the burrows and the tunnels which offer their dwellers escape routes from predators. A die-cut cover affords readers a sneak preview of the book's format.

      Though the illustrations clearly steal the show because of their realism, the text, nevertheless, has much to offer. The author has condensed the information into the most interesting facts - fascinating details about the body parts or habits which enable specific animals to survive. Text font is simple and fairly large. Sentences in a variety of lengths are written in kids' language.

      Younger readers will love the book's format. Older children might find it a bit childish, but there is plenty of information inside that will sustain their interest. It seems that every time the book is opened, readers notice something new. A wonderful gift book.

Highly recommended.