Researchers work with a hibernating brown bear. Copyright: Tobias Petzold, Ludwig-Maximilians University Munich (IMAGE)

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Researchers work with a hibernating brown bear. Copyright: Tobias Petzold, Ludwig-Maximilians University Munich

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Researchers work with a hibernating brown bear. Copyright: Tobias Petzold, Ludwig-Maximilians University Munich

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Copyright: Tobias Petzold, Ludwig-Maximilians University Munich

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