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Zebra + Horse = Zorse (1:13)

Watch this video about an unusual zebra and horse hybrid on HowStuffWorks. Normal zorses or zebroids are normally a result of when a male zebra mates with a female horse. However, this zorse named Eclyse is the offspring of a female zebra and a male... More »

Wolverine Revealed: Dangerous or In Danger? (2:06)

The wolverine has a reputation for being one of the most dangerous, ravenous animals in the wild -- but few people have seen the creature up close. Learn more this vulnerable species.

Polar Bear Alcatraz: An Uncertain Future (2:14)

These polar bears face an uncertain future on Wrangel Island. Can they survive global warming?

Cheetah: Race Against Time Feeding Time (1:03)

A pack of cheetahs stalks the meat-mobile in this Animal Planet clip.

Tsavo Lions: An Aggresive Lion? (2:58)

Do the maneless lions of Tsavo deserve their reputation for agressiveness towards humans? Watch this video to learn more about these unique and dangerous animals.

Daily Planet: Born to be Wild (6:16)

As wild marmots began to go extinct, conservationists started breeding them and releasing them into the wild. Some were even released into a special marmot reserve.

Daily Planet: Orphaned Adolescent Grizzlies (4:40)

Some orphaned grizzly bears have officials worried, since in this stage of their lives they should still be learning from their mothers. Because these bears could not finish their education, many of them go hungry as they prepare for hibernation.

Mammals: The Big Cats (5:42)

The lion is the largest of all African cats and are the only big cats to live in large social units. These cooperative groups help the lions to stalk and kill animals much larger and faster than themselves. Cheetahs are the fastest land animals.

Mammals: Polar Bears and Kodiak Brown Bears (3:46)

Polar bears and Kodiak brown bears are the world's largest land predators. The polar bear’s fur is waterproof. Hollow cores in their colorless fur allow sunlight to warm their skin. Kodiak bears are largely solitary.

Mammals: Humpback Whales (6:22)

Whales have been hunted for hundreds of years, and many whales are now endangered. Humpback whales are thought to be quite intelligent. The males sing long and beautiful songs.

Mammals: Gray Wolves (5:00)

The gray wolf is a predator whose survival depends on a rigorous social order. An alpha male leads the pack. Gray wolves are an endangered species.

Mammals: Introduction to Mammals (3:49)

Mammals feed their young with milk and have hair or fur. Mammals produce fewer offspring than other types of animals, but the young have a higher rate of survival.