The huge diplodocus had a long neck, a long tail, and a 2,000-pound heart! As it grazed the land for low-lying plants, the dinosaur whipped its tail at dangerous enemies. In this high-interest title, readers will learn about the life of the diplodocus, from how it survived and what it ate to how it went extinct. Special features such as maps, a pronunciation guide, a diet graphic, and a two-page profile support key points in this engaging text about the enormous diplodocus!