The bracket for Fat Bear Week 2025 has been revealed, and 12 bears at Katmai National Park and Preserve in Alaska are looking for votes from all over the world — but only one will be crowned the champion of the fat bears.

For more than a decade, the Fat Bear Week contest has been highlighting some of the largest brown bears on the planet living along Brooks River inside the national park as they prepare for hibernation. The annual vote for fattest bear of the year begins Tuesday, Sept. 23, and will continue through Sept. 30. People can vote online between 12 and 9 p.m. ET each day.

Bear lovers can also watch the fattened animals in their natural habitats in a series of livestreams on Explore.org , a multimedia organization that partners with the National Park Service to host th

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