Over millions of years, during the Age of Dinosaurs, bigger and bigger species evolved. The plant-eaters, or herbivores, were the biggest by far. They were the largest creatures that have ever lived on land. This gruesome guide explores the lives of these gigantic creatures, exploring their diet, physical characteristics, and how they could defend themselves against predators. Packed with fact-filled, easy-to-read text, quirky illustrations and side panels providing more icky information.