Alaska's Katmai National Park is home to about 2,200 brown bears (Credit: Explore.org)Fat Bear Week is back! The idea for Fat Bear Week came to Park Ranger Mike Fitz in 2014 when he saw two pictures of the same bear shared by a fan on the park’s website. Fat Bear Week is a single-elimination contest featuring just 12 bears (Credit: Explore.org)Inspired, Fitz and other rangers launched a one-day event called "Fat Bear Tuesday" on Facebook, where votes were counted via "likes." Fat Bear Week is a single-elimination competition. Whether you vote for the returning champion or a newcomer, Fat Bear Week is a fun way to follow these amazing animals.