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Nature
The Largest Mass Migration on the Planet
Every winter, billions of sardines off the coast of South Africa embark on their annual breeding migration. The sardine run is the largest biomass migration on the planet, rivaling the great herds of the Serengeti.
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The explosion of dog types into the roughly 400 breeds and dogs' role in medical care.
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This film explores how the domestication of dogs might have taken place.
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No spider can escape the tireless pursuit of Martin Nicholas.
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54:19
It's one of the most brutal environments on Earth - so how does life carry on here?
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Efforts to rescue the thousands of household pets left homeless by Hurricane Katrina.