I observed Grizzly #399 this spring in Grand Teton National Park; She was strolling her neighborhood with two playful and rowdy cubs. WATCH VIDEO: # 399 was assigned to this female grizzly by researchers with the Interagency Grizzly Bear Study Team. In 2017, her age is/was estimated to be 21 years old. The average life span of a grizzly bear in the wild is 25 years (source: national geographic). #399 is considered to be a "celebrity bear", and attracts large crowds of human