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CloseThe iconic Fat Bear Week, run by Katmai National Park in Alaska, is returning for its 13th year and will run from 22-29 of September.
Fans can vote online on which brown bear has put on the most weight ahead of their winter hibernation, by comparing photos from early and late summer.
Last year, over 1.7 million votes were cast from more than 100 countries to crown the furry chonker champion.
Video by Meiying Wu; produced by Madeline Gerber.
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