A large Labrador retriever runs after a ball. The dog was once a tiny embryo inside its mother. So how did it develop? Beginning readers will discover how an embryo grows into a puppy and then an adult dog in this basic introduction to animal development. Each 24-page book features controlled text with age-appropriate vocabulary and simple sentence construction. The clear text, fresh design, and colorful, eye-catching photos are sure to capture the interest of emergent readers.