World of PetsAre dogs related to wolves? How many hours a day do cats spend sleeping? How often do hamsters give birth? Read this book to find out Part of World Book's Learning Ladders series, this book introduces children to common household pets, such as dogs, cats, rabbits, and guinea pigs. Each spread includes introductory text, colorful illustrations with detailed captions, and photographs that show real world examples of the featured topic. Puzzle pages, fun