Did you know that the stegosaurus had a brain the size of a walnut, or that there used to be scorpions that grew to more than two meters in length? Do you want to know which prehistoric animals dinosaurs used to be afraid of? Amaze you friends by telling them about feathered dinosaurs, giant millipedes. and flying giraffes! This book is packed with the wildest, weirdest, funniest, filthiest, foulest, wisest, grossest, brainiest, oldest. and best facts about the prehistoric world.