What if a blue whale and a mosquito had a fight? Who do you think would win? This nonfiction reader compares and contrasts two unlikely animals: a blue whale and a mosquito! Readers will learn about each animal's anatomy, behavior, and more. Then compare and contrast the battling pair before finally discovering the winner! This nonfiction series is full of facts, photos, and realistic illustrations, and it includes a range of mammals, sea creatures, insects, and dinosaurs to satisfy all kinds of animal fans