News Yellowstone Grizzlies Coming Out of Hibernation Early “Bear-Grizzly-Bison-Carcass-Lake_NPSJimPeaco_680” "Grizzly bear on bison carcass near Yellowstone Lake. Photo taken April 2013 by NPS Jim Peaco" Share this Facebook Icon Twitter Icon Email Icon Join Yellowstone National Park Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Join Yellowstone National Park Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In