Endangered and Extinct Reptiles

Tortoise, Tree Snake, Gator, and Sea Snake: What Is a Reptile?

Salamander, Frog, and Polliwog: What Is an Amphibian?

Endangered and Extinct Birds

Endangered and Extinct Mammals

Guess What Is Growing Inside This Egg

Let's Look at Iguanas

What Can Live in the Mountains?

What Can Live in a Lake?

What Can Live in a Grassland?

What Can Live in the Ocean?

Zombie Makers: True Stories of Nature's Undead

Do You Know about Reptiles?

Do You Know about Amphibians?

What Can Live in a Desert?

What Can Live in a Forest?

The Case of the Vanishing Golden Frogs: A Scientific Mystery

Scales

From Tadpole to Frog

Endangered and Extinct Invertebrates