As part of the unique, science Know-It-Alls! Series that features stunning covers and engaging text, this book puts the spotlight on Dinosaurs! Did you know that Tyrannosaurus was the fiercest meat-eating dinosaur? It wasn’t the biggest, but it was huge—7 tons (6.5 metric tons) of charging monster. At over 40 feet (12 m) long, it was a smart killer with sharp eyesight. Learn all about these prehistoric creatures and the paleontologists that study them.