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Nature
In the Valley of Wolves - Preview
Three years in the making, this is the dramatic saga of Yellowstone's Druid wolf pack, its turf wars with rival packs and the fate of the wolves' Lamar Valley ecosystem. 7/17/11
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53:59
The story of legendary tigers of India told by a man who’s devoted his life to keeping them alive.
53:33
At Reteti Sanctuary, caretakers prepares to release their oldest orphans into the wild.
53:33
In northern Kenya, a remarkable conservation experiment is unfolding at Reteti Sanctuary.
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51:54
Animal parents must balance risk and reward to raise their young in grasslands.
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53:24
Follow the complex lives of giant elephant bulls in Amboseli and Mount Kilimanjaro.
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53:38
Follow a female mountain lion in the Montana mountains over the course of a decade.