Enormous Bear 747 may just take the cake as Fat Bear Week's fattest bear

Welcome to Fat Bear Week at Mashable! Each fall, Katmai National Park holds a competition as Alaska’s brown bears finish fattening up for their long winter hibernation. This year, Mashable is getting in on the salmon-munching action. Check back with us all week as we follow the fat bear face-offs each day, and remember to get your votes in for each round. Happy fishing!

Over the course of just three hours in late June, ecologist Mike Fitz stood atop a bear viewing platform in Alaska's Katmai National Park and watched Bear 747, a dominant male, consume 15 whole salmon. 

"That's about 67,000 calories," Fitz, a former Katmai ranger, said over email. Read more...