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In this series wildlife expert Steve Backshall goes in search of the fiercest animals on the planet.
This week in the final episode of the series, Steve is in the vast nature reserves of South Africa.
He goes in search of a pack of rare and endangered African wild dogs, he helps capture and tag a magnificent martial eagle. He gets hands on with a venomous spitting cobra and a puff adder as they strike and he risks life and limb to kayak up close to Africa's most dangerous mammal, the highly unpredictable hippopotamus.