What do we mean by 'prehistoric' creatures? When did they live? What were the scariest prehistoric animals? How do we know about them? This book introduces us to some seriously scary prehistoric creatures, from woolly mammoths to big cats, and explains how our ancestors survived along side these fearsome animals. "Prehistoric Scary Creatures" is packed with facts written in an accessible question-and-answer format. Special x-ray pages enable readers to see how the internal structure of an animal.