Fat Bear Week 2026 kicks off with defending champion Chunk
Alaska's annual bear popularity contest opens public voting for its 12th edition
1Defending champion returns
Chunk 32, the 1,200-pound male brown bear who won Fat Bear Week 2025, has been spotted at Brooks Falls ahead of this year's competition. Remarkably, he achieved last year's landslide victory despite suffering severe injuries including a completely broken mandible and damaged teeth. Park rangers describe him as a 'super resilient bear' for maintaining his massive size with these impairments. The injuries' origin remains unknown, adding to Chunk's mystique as he defends his title against a new generation of competitors.
2Global voting phenomenon
What began as a small Facebook event in 2014 has grown into an international sensation, with over 1.7 million votes cast last year from more than 100 countries. This marks a thousand-fold increase from the inaugural event's fewer than 1,700 votes. The week-long tournament uses single-elimination brackets where the public votes online at fatbearweek.org. While no physical prize exists, the winner symbolizes peak bear fitness and successful pre-hibernation fat accumulation. The contest highlights wildlife conservation through engaging public participation.
3Biological significance
Fat Bear Week coincides with bears' critical pre-hibernation feeding period in October and November. During summer and fall, brown bears may consume upwards of 200,000 calories daily, primarily from sockeye salmon, to build fat reserves. Adult males like Chunk can weigh twice as much as females. The event showcases this natural process, with scientists making educated weight estimates to avoid disturbing the animals. Approximately 2,200 brown bears inhabit Katmai National Park, which also hosts moose, wolves and bald eagles.
4Competitive landscape
This year's competition features a strong new generation, with more cubs observed at Brooks Camp than in recent years. Chunk faces potential challengers like veteran bear 856 and 128 Grazer, who made history in 2024 as the first mother bear to win. Their rivalry intensified when Chunk attacked Grazer's cub after it intruded on his fishing spot, leading to the cub's death. This incident likely influenced Grazer's narrow victory over Chunk in 2024. The full competitor list will be announced before voting begins on September 22.
5Event origins
Former ranger Mike Fitz conceived Fat Bear Week in 2014 after noticing dramatic physical changes in bears between June and September. The 4-million-acre park hosted the first one-day event on Facebook before expanding to a full week in 2015. The competition educates the public about bear biology while fostering appreciation for Katmai's ecosystem. Live cameras at Brooks Falls allow worldwide audiences to observe the bears' fishing techniques and social interactions, with the fattest individuals becoming unlikely celebrities each fall.
6Voting mechanics
The tournament uses a single-elimination bracket system where bears face head-to-head matchups. Voters consider each bear's size, apparent health, and fishing success when casting ballots. While some competitors develop fan followings, newcomers can surprise - like 2024's winner 128 Grazer defeating established favorites. The event's growth reflects both increased participation and social media sharing, with rangers providing commentary on each bear's backstory and physical transformation throughout the summer feeding season.
7Ecological context
Katmai's Brooks River hosts one of the world's largest sockeye salmon runs, creating ideal fattening conditions. The park's protected status ensures minimal human interference with natural processes. Scientists use the event to study bear behavior and health indicators without invasive methods. The competition's timing captures bears at peak weights before winter scarcity. This unique scenario allows public engagement with wildlife biology while supporting conservation efforts through increased awareness of Katmai's ecosystem dynamics.
8Cultural impact
Fat Bear Week has transcended its conservation origins to become a pop culture phenomenon, featuring in mainstream media and inspiring merchandise. The event's success demonstrates how scientific outreach can leverage competition and storytelling. Each champion bear develops a distinct personality in the public eye, with Chunk's injury comeback narrative resonating particularly strongly. As the 12th edition begins, the contest continues to blend education, entertainment and ecological awareness through its unusual focus on ursine adiposity.