On Thursday, backcountry wildlife guide Charles "Carl" Mock, 40, was fishing by himself near Yellowstone National Park in Montana when a grizzly bear attacked him. Sadly, Mock died on Saturday of his injuries. According to the nonprofit National Parks Traveler, "From 1980 to 2014, 37 people were injured by grizzly bears in Yellowstone (an average of 1.1 injuries per year). — Read the rest