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Polar bears, crocodiles and anacondas are all ultimate predators, but their hunting strategies are very different. We'll see one seal put up a fight, but it is no match for the great white shark's 700 pounds of bite force. Watch as a polar bear, the world's largest land carnivore, tackles a walrus equipped with formidable tusks. While crocodiles are some of the deadliest animals known to man and are natural-born killers, all that matters to these predators is whether something is edible.