A pictorial introduction to the animals that lay eggs, including chickens as well as other birds, reptiles, amphibians, fishes, insects, and even a few mammals.

Provides unusual facts about various mammals, birds, reptiles, amphibians, fish, insects, and arachnids, and includes information about both endangered and extinct species.

Introduces the idea that animals can be classified into groups according to the characteristics they have in common, and shows the ways that different types of mammals, birds, reptiles, amphibians, fish, and invertebrates are alike.