"Explore some of the fascinating things that animals do on their first day" -- Cover.

"Which came first? The EGG, of course! In this book, Steve Jenkins and Robin Page take a look at the curious world of animal eggs. Eggs are laid one at a time or by the millions, and they come in a fantastic variety of colors, shapes, and sizes. From a mother that carries her eggs piggyback to a father that holds them in his mouth, explore the many ways animals lay and protect their eggs. And what goes on inside an egg? See how an animal develops...