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David Attenborough celebrates the amazing variety of the natural world in this epic documentary series, filmed over four years across 64 different countries.

The stakes on the mat are high, but for these cheerleaders, the only thing more brutal than their workouts and more exceptional than their performances are the stories of adversity and triumph behind the athletes themselves.

David Attenborough presents a documentary series exploring how animals meet the challenges of surviving in the most iconic habitats on earth.