Who's in this egg? There are lots of wonderful birds, bugs, and reptiles that hatch out of an egg. Come and find out who's inside...could be a tadpole, a baby crocodile, a baby penguin, a sea turtle or 4 other surprises. Fun facts about each egg at the end. A great beginner science book for young children. (22 pages, over 30 high quality photos, learn about who comes out of an egg, focus on birds, bugs, and reptiles. A beginning science book, read to your child ages 0-5.