Now you can become a Junior Genius with Ken Jennings' first children's series!

With this book about dinosaurs, you'll become an expert and wow your friends and teachers with awesome prehistoric facts. Did you know that dinosaur skin was more like bumpy bird skin than modern snake or crocodile scales? Or that Tyrannosaurus rex might have croaked like a frog instead of roaring? With great illustrations, cool trivia, and fun quizzes to test your knowledge, this Junior Genius Guide will have you on your way to whiz-kid status in no time!