Season 4.
Season 1.Season 2.Season 3.Season 4.Season 5.Season 6.Season 7.Season 8.Season 9.Season 10.Season 11.Season 12.Season 13.Season 14.Season 15.Season 16.Season 17.Season 18.Season 19.Season 20.Season 21.Season 22.Season 23.Season 24.Season 25.Season 26.Season 27.Season 28.Season 29.Season 30.Season 31.Season 32.Season 33.Season 34.Season 35.Season 36.Season 37.Season 38.Season 39.Season 40.Season 41.Season 42.
Number of episodes: 20
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Episode 1.And Then the Rains Came
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Episode 2.Battle of the Leaves
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Episode 3.The Ganges Gharial
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Episode 4.One Man’s Island
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Episode 5.Selva Verde: The Green Jungle
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Episode 6.The Plant Hunters
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Episode 7.Kalahari: Wilderness Without Water
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Episode 8.Emas: High Plains of Brazil
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Episode 9.The Feathered Swarm
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Episode 10.Kingdom of the Ice Bear: The Frozen Ocean
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Episode 11.Kingdom of the Ice Bear: Land of Beyond
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Episode 12.Kingdom of the Ice Bear: The Final Challenge
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Episode 13.Saguaro: Sentinel of the Desert
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Episode 14.Death Trap
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Episode 15.Aspen: Dancer on the Wind
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Episode 16.Secrets of an African Jungle
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Episode 17.Birdwatch from Florida
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Episode 18.The Gooneys of Midway
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Episode 19.Where Eagles Fly
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Episode 20.The Skyhunters
Noah's Ark 
The Lord of the Rings: The Return of the King 
Taffy 
Beyond the Law 
