For 17 years, Thomas D. Mangelsen has photographed and followed the lives of a family of grizzly bears in Wyoming, led by the renowned mother bear, Grizzly 399.
This incredible bear family has captivated millions, challenging long-held misconceptions about one of nature’s most formidable predators.

Grizzly 399, named because she is the 399th bear registered in the Greater Yellowstone Ecosystem, has become a beloved figure. Her ability to tolerate humans has resulted in large gatherings of fans, sometimes causing “bear jams” along the roads of Yellowstone and Grand Teton National Parks.
Mangelsen, an award-winning photographer and conservationist, captures the essence of these bears in his new photo book, “Grizzly 399: The World’s Most Famous Mother Bear,” published by Rizzoli.

Mangelsen describes Grizzly 399 as exceptionally intelligent and adaptable. She skillfully navigates the roads, often looking both ways before crossing. Despite the crowds, she avoids conflicts, demonstrating awareness and caution that has endeared her to many.
Dedicated to documenting their lives, Mangelsen spends up to 10 hours a day observing the family for several months each year. His patience is remarkable, once waiting 23 days before spotting the elusive bear. He maintains a safe distance, emphasizing the dangers of getting too close to these mighty animals.
Contrary to popular belief, grizzly bears are not inherently vicious or intent on attacking humans. Mangelsen stresses that they are often more afraid of us than we are of them. Their actions are primarily driven by fear and self-preservation rather than aggression.

Grizzly 399, now around 27 years old—a remarkable age for a wild grizzly—has significantly changed public perception. Her interactions with her cubs reveal a caring and emotional side that contradicts the stereotype of grizzlies as ruthless predators.
Mangelsen has witnessed both heartbreak and joy in the lives of Grizzly 399 and her cubs. He recalls a tragic incident where one of her cubs was hit by a car. Grizzly 399’s reaction was heart-wrenching; she retrieved the cub’s body and mourned it deeply, displaying a profound sense of loss.
On another occasion, she saved a cub falling into a creek. There have been happier moments too. Mangelsen was affectionately nicknamed one of the cubs “Spirit” for its playful and energetic nature. These interactions show the bear family’s depth of emotion and familial bonds.

Grizzly 399’s fame has also highlighted the threats these bears face, including hunting. Her popularity has become a powerful advocacy tool for their protection.
As Mangelsen puts it, “She’s a miracle bear,” whose story continues to inspire and educate people about the true nature of grizzly bears.








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