An illustrated fact-filled guide to dinosaurs compares a variety of species to reveal which were the biggest, strongest, fastest, and smartest while inviting young enthusiasts to choose their favorites.

Dinosaurs have held sway over our imaginations since the discovery of their bones first shocked the world in the nineteenth century. From the monstrous beasts stalking Jurassic Park to the curiosities of the natural history museum, dinosaurs are creatures that unite young and old in awestruck wonder. Digging ever deeper into dinosaurs' ancient past, science continues to unearth new knowledge about them and the world they inhabited, a fantastic time...