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New study: Polar bears sometimes hunt walruses by hurling ice and rocks at their heads | Animal Behaviour | Earth Touch News
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Walrus and Polar Bear in the attached museum. - Picture of Great Plains Zoo & Delbridge Museum of Natural History, Sioux Falls - Tripadvisor
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The way this massive walrus intimidates and chases off a fully grown polar bear (video in comment) : r/natureismetal
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