Gr 4-6-- Both of these books have interesting color illustrations, finely drawn and detailed with humorous touches. But they are often confusing, either because of difficult-to-follow pointer lines or inconsistencies in scale, proportion, and perspective. The texts are often unfocused, making the intended audience unclear. The study of animal habitats is vital for an understanding of animal adaptation and evolution; although Animals and Where They Live introduces a world-wide range of habitats and animal species, it has no unifying theme or approach to clarify why such a study of an animal is significant. Beautiful illustrations cannot save the confusing and overly detailed text of Dinosaurs and Their World. Instead stick with Dinosaurs (Doubleday, 1987) by Daniel Cohen for a similar introduction and overview. Cohen's clear and concise writing places dinosaurs within the context of the evolution of life on earth, and their continuing and fascinating uniqueness shines through. Habitat destruction leads to animal extinction today and may have been a major factor in the extinction of the dinosaurs. What a perfect link for a series--and what an opportunity missed. --Frances E. Millhouser, Prince William Library System, Va.