Diplodocus was one of the longest dinosaurs to walk the earth during prehistoric times. Readers learn many fun facts about this giant kind of dinosaur, including how it behaved, what it ate, and what it looked like. This essential information is presented through accessible main text designed to enhance a common curriculum topic. Readers discover additional information in eye-catching fact boxes and clearly labeled diagrams. Computer-generated illustrations of these dinosaurs keep readers entertained as they learn.