Groundhogs are also known as woodchucks and whistle pigs. But don't let the funny names fool you. On February 2nd, groundhogs get to tell the future. Well... sort of.

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Added: Sat Feb 04 01:36:15 UTC 2012
Air date: Thu Feb 02 00:00:00 UTC 2012
Duration: 00:39

It's time for some high-stakes acrobatics in the Indonesian jungle. Gliding tree snakes know how to get the jump on a quick meal. But to catch this flying dragon, the snake will need to be quick indeed.

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Added: Sat Feb 04 01:36:15 UTC 2012
Air date: Mon Jan 30 00:00:00 UTC 2012
Duration: 01:53

And you thought beach volleyball got competitive. That's nothing like when two bull elephant seals called beachmasters compete for their own spot in the sand.

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Added: Sat Feb 04 01:36:15 UTC 2012
Air date: Tue Jan 31 00:00:00 UTC 2012
Duration: 01:43

Coming home from the hunt, Emperor penguins try to make it safely past a lurking leopard seal. It seems to work okay until the arctic predator decides to raise the stakes!

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Added: Mon Jan 30 17:34:14 UTC 2012
Air date: Mon Jan 23 00:00:00 UTC 2012
Duration: 02:13

A young polar bear tries to outwit and out-compete an older bear for a meal. But it's not always a good idea to get between a full-grown arctic predator and his dinner.

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Added: Wed Jan 18 18:59:08 UTC 2012
Air date: Tue Jan 17 00:00:00 UTC 2012
Duration: 01:55

National Geographic photographer Brian Skerry describes the incredible day he spent photographing a rare, beautiful, and dangerous creature: the Oceanic Whitetip shark.

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Added: Wed Jan 18 18:59:08 UTC 2012
Air date: Wed Jan 18 00:00:00 UTC 2012
Duration: 02:11

You'd think a snail wouldn't be much threat in the sea, but the cone snail proves deadly to unsuspecting fish.

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Added: Wed Jan 11 02:43:08 UTC 2012
Air date: Wed Jan 11 00:00:00 UTC 2012
Duration: 02:41

A mother cichlid fish protects her young by keeping them in her mouth. But these crafty cuckoo catfish have caught on and they're angling to turn her offspring into dinner.

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Added: Wed Jan 11 02:43:07 UTC 2012
Air date: Mon Jan 09 00:00:00 UTC 2012
Duration: 02:50

Do cats always land on their feet? High-speed photography shows us the answer.

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Added: Wed Jan 11 02:43:07 UTC 2012
Air date: Thu Jan 12 00:00:00 UTC 2012
Duration: 03:18

With their giant wingspans, flying foxes are the world's biggest bats. Australia's black flying foxes are a prime example, with wingspans up to six feet (two meters)!

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Added: Fri Dec 23 21:18:14 UTC 2011
Air date: Thu Dec 29 00:00:00 UTC 2011
Duration: 02:20

Kodiak brown bears aren't sticklers for presentation when it comes to a scavenged meal. It's quantity, not quality, that matters here! These bears dig right in.

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Added: Fri Dec 23 21:18:14 UTC 2011
Air date: Fri Dec 30 00:00:00 UTC 2011
Duration: 02:44

Memo to herpetologists in the field: When bitten on the hand by an anaconda, do not repeat, DO NOT pull away.

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Added: Fri Dec 23 21:18:14 UTC 2011
Air date: Wed Dec 21 00:00:00 UTC 2011
Duration: 01:49

Dung beetles were sacred to ancient Egyptians, but "divine" might be the last word you'd choose to describe them. These bugs are famous for recycling of all things dung.

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Added: Fri Dec 23 21:18:14 UTC 2011
Air date: Thu Dec 22 00:00:00 UTC 2011
Duration: 02:51

It's not your normal trip to the doctor's office. Watch as South African medicine men move traditional cures into the 21st century.

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Added: Fri Dec 23 21:18:14 UTC 2011
Air date: Fri Dec 23 00:00:00 UTC 2011
Duration: 03:20

One of the world's best-camouflaged fishes is also the most venomous. The stonefish hides on the sea bottom, undetectable to its prey that is, until it strikes.

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Added: Tue Dec 20 15:22:14 UTC 2011
Air date: Mon Nov 21 00:00:00 UTC 2011
Duration: 01:18

They don't call them "king snakes" for nothing this serpent rules the roost out in the deserts near Baja California. But a four-foot-long killer is about to meet its match... a tiny curve-billed thrasher.

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Added: Mon Dec 19 14:17:13 UTC 2011
Air date: Mon Dec 05 00:00:00 UTC 2011
Duration: 00:53

Exotic creatures lie at the bottom of Japan's Suruga Bay, including spider crabs, chimaeras and lantern sharks.

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Added: Mon Dec 19 14:17:13 UTC 2011
Air date: Tue Dec 06 00:00:00 UTC 2011
Duration: 02:04

Puffin nests dot this cliffside, and there's often safety in numbers. But when the predatory skua bird is riding the wind, it's a bad time to be a puffin.

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Added: Mon Dec 19 14:17:13 UTC 2011
Air date: Thu Dec 15 00:00:00 UTC 2011
Duration: 01:57

Meet the murre, an unassuming little bird... until it gets its feet wet. Murres may be clumsy in the air, but these tiny arctic birds are like rockets underwater.

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Added: Mon Dec 19 14:17:13 UTC 2011
Air date: Fri Nov 25 00:00:00 UTC 2011
Duration: 01:19

Six feet long and always hungry, the Humboldt squid a.k.a. the "red devil" is one of the most dangerous yet intelligent predators of the deep. Now, a group of researchers is about to venture into its domain.

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Added: Mon Dec 19 14:17:13 UTC 2011
Air date: Mon Dec 12 00:00:00 UTC 2011
Duration: 03:38