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Nature
The Wild Horses That Beat Extinction
The Przewalski horse went extinct in the wild but was reintroduced at the Seer Horse Reserve in Gobi Desert, Mongolia. These horses have managed to make an impressive comeback and their success is due in large part to the social structure of their herd.
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Horseshoe crab numbers drop as their use as bait by the fishing industry increases.
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52:58
The explosion of dog types into the roughly 400 breeds and dogs' role in medical care.
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52:59
This film explores how the domestication of dogs might have taken place.
