NOEL KING, HOST:

Good morning. I'm Noel King. There's a ferocious battle underway among hungry predators in Alaska. Fat Bear Week is back at Katmai National Park and Preserve. The park wants you to vote on which of its brown bears is chubbiest. They're eating constantly to build up their body fat for hibernation. Today, Walker and Grazer face off. Tomorrow, it's Lefty and Chunk. The fattest bear will be picked next week on what the park calls Fat Bear Tuesday. And I'm Team Chunk. Transcript provided by NPR, Copyright NPR.