In What is a Dinosaur? kids of all ages will be enthralled by these ancient reptiles who ruled the earth for almost 180 million years! Striking, full-color illustrations highlight some of the most interesting and well-known of the more than 800 species of dinosaurs. Readers will learn about: - the study of fossils - the different types of dinosaur bodies - feeding and hunting habits - nests and eggs - the various theories about their extinction - what is and is not a dinosaur