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Guanacos Rare Birth Ritual

2m 22s
Guanacos have a unique problem when it comes to reproducing. They must gather in November at exactly the right time of day to give birth so the newborn can dry out on its own. A guanaco’s too-short tongue prevents it from licking its newborn clean.
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Secrets of Marmot Hibernation

2m 41s
A family of marmots prepares for their upcoming hibernation in a den 6 feet underground. As they prepare for their 6-month sleep, marmots dramatically lower their body temperature and survive on their body’s storage of fat and water. They only wake once every 2 weeks to rev up their heartbeat and visit a nearby tunnel used as a toilet.
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Making of "The Alps"

11m 27s
Go behind the scenes of NATURE's two-part miniseries "The Alps." The filmmakers braved frigid climates and tough terrain to capture the intimate moments of the animals living in the Alps.
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Annual Alpine Frog Orgy

2m 26s
When the ice on high alpine lakes begins to break, brown frogs appear with a mission. In the hundreds, brown frogs rush to the water, as none want to miss their annual springtime mating ritual.
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Preview of The Alps: The High Life

30s
In Europe’s highest mountain range, discover how Eurasian lynx, griffon vultures, ibex, marmots and more face extreme seasonal fluctuations, from volatile thunderstorms and landslides of summer to avalanches and frozen temperatures of winter. In Part One of the miniseries "The Alps", enjoy the Alps in spring and summertime as newborn animals grow up to face the coming brutal winter.
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Welcome to PBS Nature

33s
NATURE is a voice for the natural world. As one of the most-watched documentary film series on public television, NATURE delivers the best in original natural history films to audiences nationwide.
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Preview of Santa's Wild Home

35s
Get an intimate look at the wildlife of Lapland, a region in northern Finland, the fabled home of Santa Claus and actual home of reindeer, great gray owls, wolverines, eagles, wolves, musk oxen, brown bears and more.
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Why are Orcas Known as the “Wolves of the Sea”?

2m 45s
Orcas have a special way of hunting herring, through a quick turn and their powerful tails sending shockwaves through the water to stun the fish. Large shoals of herring gather in the winter months, and it’s not just orcas that take advantage of the feast.
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Tool-Using Macaques Could Drive Shellfish Extinct

2m 32s
On Koram Island, beach-combing long-tailed macaques have developed impressive tool-using skills, which are having some surprising consequences. If these monkeys continue to over-harvest their environment, the shellfish could disappear. This is the first reported case of a tool-using animal, other than humans, overexploiting a natural resource.
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Orangutan Orphans Learn to Climb

3m 9s
Many young orangutans do not survive in the wild after being released from human care because they often lack the skills needed to survive in the canopy. Conservationist Dr. Signe Preuschoft had an idea to teach these young orangutans to climb.
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How Do Monkeys Safely Cross the Road?

3m 14s
Dusky langurs' once pristine forests are now bisected by busy roads. To move through their territory, they must risk crossing dangerous traffic every day. After witnessing their struggle, Local Researcher Jo Leen Yap decided to build a monkey bridge.
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