America's most keenly awaited animal competition has come to its corpulent conclusion, with Chunk named the winner of this year's Fat Bear Week.

The enormous beast chewed his way through thousands of kilograms (pounds) of salmon in Alaska's Katmai National Park to be voted the chubbiest bear in the tongue-in-cheek contest, which highlights the creatures' preparation for months of hibernation.

The bear -- who had no idea he was competing -- beat out a stiff challenge from two-time winner Grazer, denying her an unprecedented three-peat of which she was also entirely unaware.

Hundreds of thousands of votes were cast by people all over the world, who compared before-and-after pictures of the animals in a series of head-to-head ballots.

The contest began in 2014 aiming to raise awareness of

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