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Fat Bear Week

Welcome to Fat Bear Week 2023! Katmai National Park and Preserve’s brown bears spent the summer gorging on 4,500-calorie salmon, and they've transformed into rotund giants, some over 1,000 pounds. The Alaskan park is holding its annual playoff-like competition for the fattest of the fat bears (you can vote online between Oct.4 through Oct. 10). Mashable will be following all the ursine activity.

The 2023 Fat Bear Week winner, Grazer, seen in Katmai National Park and Preserve's Brooks River in September.

Fat Bear Week winner is revealed. She's a rebel.

The dominant bear 856 photographed in Katmai National Park and Preserve's Brooks River in 2022.

This fat bear won't win Fat Bear Week. But the bears know he's king.

Unprecedented fat bear story just got even better

Latest

This bear looked frail and weak. Look at his transformation.

"He must have been extraordinarily hungry."

10/05/2023

By Mark Kaufman

The aging bear Otis (bear 480) seen looking quite gaunt in July 2023.

What's Fat Bear Week?

"Each bear faces its own challenges in order to gain the body mass necessary to survive."

10/04/2023

By Mark Kaufman

The Fat Bear Week Champion bear 747 fishing in Katmai National Park and Preserve's Brooks River.

Fat Bear Week is back. In 2023, the bears overcame big obstacles.

A fat bear is a successful bear.

10/03/2023

By Mark Kaufman

One of the 2023 Fat Bear Week contestants, "Chunk."

A government shutdown means bad news for Fat Bear Week

Congressional dysfunction threatens to delay the best week of the internet.

09/29/2023

By Mark Kaufman

The famous Katmai National Park and Preserve bear "Holly" (bear 435).

Incredible Fat Bear Week champ is more than just the fattest bear

He's a legend in his realm.

10/12/2022

By Mark Kaufman

The colossal bear 747 in Katmai National Park and Preserve's Brooks River.

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