Press the buttons to hear the dinosaurs roar! The prehistoric world of dinosaurs comes to life in Discovery: Roar with the Dinosaurs! This book features 39 push-button sounds. While reading the text, children can note the icons in the text and then press the corresponding sound button to bring the dinosaur scenes to life. Hear the mighty T.rex roar across the jungle, a distant volcano erupt, or a hungry Triceratops munch on some plants in this hands-on book perfect for dinosaur enthusiasts.