National Geographic Primary Readers pair magnificent National Geographic photographs with engaging text by skilled authors to help your child learn to read. Developed by education experts, this series of books for beginner readers is spread across four levels: Early Reader, Becoming Fluent, Becoming Independent and Independent Reader. Ever since the first youngster in history had a pet, cats vs. dogs has been an intensely debated issue at lunch tables around the world. Which one's better? Smarter? This National Geographic Kids Level 4 Reader presents the facts in a fun and informative fashion. With fascinating and accessible text, children will love debating and deciding the answer to this question for themselves. show more