Fat Bear Week is fun to watch, but packing on pounds is serious business for the bears at Katmai National Park.

Fat Bear Week is an annual competition where fans vote for the fattest bear at Katmai National Park and Preserve. The event runs from Sept. 23 to Sept. 30, with daily voting on the explore.org website ...

Fat Bear Week is an annual competition where fans vote for the fattest bear at Katmai National Park and Preserve. The event runs from Sept. 23 to Sept. 30, with daily voting on the explore.org website ...

But for bragging rights, voting for Fat Bear Week finals opens at noon ET on Sept. 30 on the event's website . This article originally appeared on USA TODAY: It's the Fat Bear Week finals. Will this ...

The chonkiest challenge of the year is here. Fat Bear Week begins Sept. 23. Each year, the burly bears of Katmai National Park and Preserve capture global attention in a March Madness-style bracket ...