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Nature
Why Do Cuttlefish Change Color?
The skin of a cuttlefish shows its emotional state. Its color may change when meeting a potential mate or a rival. But what happens when a male cuttlefish interacts with Spy Cuttlefish?
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53:56
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.
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52:59
No spider can escape the tireless pursuit of Martin Nicholas.