The bestselling I Wonder Why series has the answers to all the questions you've ever wanted to ask about the natural world, history, space and more! What do all birds have in common? Why do leopards have spots? Which fish can climb trees? Learn the answers to these questions and more in this fascinating question-and-answer book all about animals. Colourful and charming illustrations bring the facts to life and capture the attention of young readers. Information is presented in bite-sized nuggets, making it ideal for reading aloud. Other titles in the I Wonder Why series include The Sea Is Salty, Triceratops Had Horns, The Sun Rises and Stars Twinkle.