Zebras are social African equids best known for their unmistakable black-and-white stripes. The plains zebra is featured in PBS Nature's Great Zebra Exodus. Learn more about zebra anatomy, diet, habitat, and social structure.

Highly adaptable, whitetailed deer are able to succeed where other species cannot. Just a century ago there were around 1 million deer in North America. Today, there are 30 million. Learn about whitetail anatomy, their diet, habitat, and other deer facts.

High-level classical dressage maneuvers during which the horse leaves the ground, know as airs above the ground, can appear deceptively easy, but they are incredibly demanding of the horse. The best of the best perform one of only three maneuvers at the Spanish Riding School.

This animated infographic looks at how the dung beetle navigates in both daytime and nighttime hours, moving its dung ball in a straight line in an effort to avoid other male beetles that might try to steal the precious resource.

Composting is the combining and managing of specific waste materials so that they decompose. Once the materials are mixed together, microbes in the soil will start to breakdown the waste and turn it into the nutrient rich material that helps plants grow.

Few fish hold as many mysteries as the eel. Unlike most fish, eels are catadromous. This means they spend most of their adult lives in freshwater rivers and streams, and return to the oceans where they were first born to spawn. In this infographic, learn about the American Eel and its mysterious underwater world.

Learn the essential facts about these intelligent birds.

Photo gallery from Cold Warriors: Wolves and Buffalo.

Despite a changing world, the leopard has been able to maintain a surprisingly large population, especially in comparison to other big cats.