Uses text, illustrations, and plastic models embedded in cutaway pages to examine the inner workings of the Tyrannosaurus Rex, providing information about the dinosaur's skeletal, cardiopulmonary, digestive, reproductive, nervous, muscular, and dermal systems.

On board pages. Illustrated by Christian Kitzmüller and Davide Bonadonna. Book includes dinosaur model secured into the middle of the book. Model sculpted by Susan Hernday.