Fat Bear Week: How Alaska's brown bears nearly double in size

Brown bears in Katmai National Park can eat up to 160,000 calories a day to prepare for winter, but how do they know it's feasting time?

SINSIN
Oct 4, 2023 - 02:00
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Fat Bear Week: How Alaska's brown bears nearly double in size
Brown bears in Katmai National Park can eat up to 160,000 calories a day to prepare for winter, but how do they know it's feasting time?

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