National Geographic kids. Level 2

"A pair of eyes lurks just above the water's surface. Is it a crocodile or an alligator? Packed with beautiful and engaging photos, kids will learn all about these two reptiles--and find out what makes them different" --.

Introduction to penguins, discussing their physical characteristics, mating habits, migration behaviors, predators, and different species.

An introduction to tigers that describes their physical characteristics, behavior, and more.

Describes the appearance, behavior, and habitat of cheetahs, Earth's fastest land animals.