A brief discussion of the causes of extinction (hunting, habitat destruction, pollution, etc.), followed by units focused on continental regions and their special problems, each introducing 20 or so ``endangered'' or ``threatened'' animals (terms the author never defines), with color photos or illustrations of each animal, a few facts, common and scientific names, and size. The illustrations (by many different artists) are uneven in quality (Few says the St. Helena earwig has ``forceps on its head,'' but the picture shows them on its abdomen), but, overall, attractive and detailed. Facts on File's The Atlas of Endangered Animals (1993) gives similar coverage with clear color photos and more accurate information on location and endangered status. Few includes a helpful ``Resource List,'' but his book is a second choice. Index. (Nonfiction. 8-12)