Mammals, Mammal Pictures, Facts About Mammals

Polar Bear

Find out how these polar predators rule the Arctic. Get under their skin for a closer look at what keeps polar bears warm.
Coming This Fall

Don't miss Great Migrations, a seven-part television event taking you around the world on the arduous journeys millions of animals undertake to ensure the survival of their species.
Western Lowland Gorilla

Learn about life inside a troop of these endangered primates. See the threats that face these social and highly intelligent animals.
Lions Quiz

The king of cats rules with a roar and a fierce bite. What else do you know about this top predator?
Iberian Lynx Photo Gallery

Not since the time of the sabertooth has a feline species gone extinct. Earth’s most endangered cat could be next.

Tarzan Chameleon Found

The discovery on Madagascar of the new species—given away by its flat snout—is a "Tarzan yell for conservation," a new study says.
Lizard Evolving for Live Birth

A skink species lays eggs on coasts but births babies in mountains, giving a glimpse of how placentas evolved, scientists say.

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Win a Grizzly Encounter

A trip for two to Montana—Join Casey on his journey with lovable Brutus the bear!
Photo Contest

See a selection of photo entries in this year's contest!