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Nature
Male Koalas Battle over a Female
Spy koala captures two male koalas fighting, a moment rarely filmed. The winner of the battle gets the girl.
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53:48
Choosing a puppy isn't child's play, as NATURE illustrates.
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53:31
NATURE follows an extraordinary stallion, whose life has been recorded since his birth.
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53:49
Adapting some animal behaviors benefits man in body, mind and spirit.
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53:46
Learn about the incredible skills of Alaskan huskies.
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53:49
The influence the sun and moon have on the seasons and the tides.
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53:43
Scientists teach a gorilla to use sign language to communicate with them.
Owners relate tales of feline courage, stamina, resourcefulness and loyalty.
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53:54
Learn about the incredible wilderness of the Serengeti.
26:15
The Grand Canyon's terrain ranges from conifer forest to desert.
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47:52
Dogs aid the disabled, do dangerous military work, find humans buried by avalanches
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54:19
Researchers and filmmakers produce the first comprehensive film chronicle of the jaguar.
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55:02
The walls of ice in Glacier Bay surround the most beautiful sights Alaska has to offer.