Laugh and learn with this picture book set in the days WHEN DINOSAURS WALKED THE EARTH! Dinosaurs chase each other in this hilarious explanation of the food chain.   …like the Smallasaurus, who enjoys a plant-based diet, and Badasaurus who likes to eat small dinosaurs who enjoy a plant-based diet.   It all begins when Smallasaurus has to think. And thinking can be a problem when you only have a brain the size of a walnut.   Luckily, Badasaurus only has a brain the size of a p