Of course dinosaurs were big. The largest of all, Argentinosaurus, weighed as much as twenty elephants. But not every dinosaur was gigantic. Compsognathus was not much bigger than a cat. The tiniest dinosaur ever found, the baby Mussaurus, was so small you could have cradled it in your hands. Vivid artwork of a lush prehistoric world illustrates a text accessible to the youngest paleontologists, making this a spectacular introduction to the world of dinosaurs-from the biggest to the smallest.