When a pack of wolves sense something wrong with a bull, they leave the healthier ones behind to chase it instead.
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Natural World: A Wolf Called Storm

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thoughtprovoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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