The Spinosaurus, with its huge sail on its back, is the largest known carnivorous dinosaur. Early readers learn interesting facts such as these through the informative main text about these prehistoric creatures. In addition, eye-catching fact boxes and detailed diagrams are included throughout the text to provide extra insight about this popular science curriculum topic. Vibrant computer-generated illustrations help readers visualize what this dinosaur looked like and its surroundings. What did a Spinosaurus eat? How did it catch its prey? These answers are waiting to be discovered in the text.