If you read about dinosaurs as a child, watched Jurassic World and now think you know everything about them, there are many surprises waiting for you in this book. Starting with the description of Megalosaurus in the 19th century. and ending with discoveries from 2017, scientists Darren Naish and Paul Barrett talk about what paleontologists know about these animals today and how computer modeling, tomography and other new technologies are helping scientists learn even more. A 150-million-year story unfolds before you, from the first cat-sized creatures to the Tyrannosaurus rex and on to modern hawks and hummingbirds. How dinosaurs appeared, how they behaved, how they reproduced, how they hunted and defended themselves from predators. And finally, why did they become extinct? But not all of them went extinct: after all, birds are actually dinosaurs too, which means these amazing animals are still with us. The book will be of interest to both adults and young dinosaur lovers.