Discover how WWI transformed America through personal stories.
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Pika Builds Nest to Survive Long Harsh Winter
A close relative of the rabbit displays 'haying' behavior.
Why the Giant Sequoia Needs Fire to Grow
Learn how the destructive force of fire is necessary for new life.
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See the design and engineering that goes into a Spy Creature.
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Skua Steals 'Spy Egg'
Get an 'eggs-eye' view of a robbery in progress.
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A brave female meerkat spots a cobra and tries to run it off.
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Staring down a half-ton Nile croc isn't for the faint of heart.
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A series producer for "Spy in the Wild" recalls the humorous behavior of some wild chimps.
'Spy Sloth' Meets Real Sloth
A robotic camera reveals why you don't want to hug a sloth.
Orangutan Learns to Saw Wood
Given the chance, orangutans can learn to use human tools.
Chimp Makes Orphaned Genet Cat His Pet
Just like humans, chimps keep pets!
Crocodile Mom Scoops Up Babies in Mouth
A female crocodile carries her babies to safety between her deadly teeth.
Arctic Fox Dive Bombs Prey Hidden in the Snow
Arctic foxes use a special pouncing technique known as ‘moussing’
Reindeer Noses Really Do Glow Red
Behind the Christmas folktale, there's a grain of truth.
Did the American Cheetah Make the Pronghorn Fast?
The pronghorn antelope's speed may be due to an arms race with the American cheetah.
Jaguar Attacks Caiman Crocodile
The jaguar's powerful jaws allow it to hunt other apex predators.
Grumpy-Faced Cat is a Mountain Survivor
If you were eking out a living like the Pallas's cat, you might be grumpy too.
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The clouded leopard moves more like a monkey than a cat.
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A rare giraffe species takes a road trip to the other side of the Nile River.
Giraffe Anatomy 101
Giraffe's may be gentle, but they are impressive beasts.
Wildlife Vets Take Down Giraffe — To Save It!
These vets have big job to do.
Secret of the Hummingbird's Tongue
Hummingbirds can lap up all of a flower's nectar in seconds. Here's how they do it.
Close Encounter with Huge Silverback Gorilla
Cameraman Vianet D’jenguet encounters a large siverback gorilla named Bouka.
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