Young dinosaur fans will enjoy the lush, full-color pencil illustrations and simple fictionalized story of the small, gentle, plant-eating dinosaurs who outwit fierce, stupid Tyrannosaurus Rex--tripping him, throwing mud in his face, and embarrassing him so much that he leaves the neighborhood. Sly Duckbill and gentle Ankylosaurus are decently portrayed, but poor Rex has dreadful dialogue. He comes crashing through trees, sharp teeth glistening, only to observe, ""I do believe I've found a snack."" Fans of this arch-villian know he would never say anything so wimpish. Though not as clever as Carrick's Patrick's Dinosaurs (1983), the subject is sure of an audience.