Nobody knows why this mother bear is so aggressive, but her fans online love it

Grazer, a 15-year-old sow, will maul, swat or bite any bear that even thinks about getting too close to her cubsMore than 2,000 bears live within Katmai national park in Alaska, where they spend the precious few warm-weather months fishing for salmon, swimming and strolling over the park's nearly 4.1m acres. But in recent years, one bear has cultivated an internet following for demonstrating uncommonly aggressive behavior with others. Related: Fat bear week: America's most body positive contest nears climax Continue reading...