Quick answer
Wild brown bears typically live around 25 years, though predation, disease, and habitat quality shift the average.
Lifespan in the wild
Most brown bears reach roughly 25 years under natural conditions. 20–25 years in the wild (up to 35 in captivity)
Factors affecting longevity
Predators, disease, food scarcity, and human pressures all shape survival. Males and females may differ in average lifespan.
In captivity or as pets
With veterinary care and steady nutrition, brown bears sometimes live longer than wild averages — though wild longevity reflects natural ecology.
Oldest recorded individuals
Long-lived brown bears are rare in the wild; research and zoo records help set upper limits for the species.
Sources
FAQs
How long do brown bears live in the wild?
About 25 years on average.
What affects brown bear lifespan?
Predation, habitat quality, disease, and food availability.
Do brown bears live longer in captivity?
Often yes, when nutrition and healthcare are consistent.
How can you tell a young brown bear from an adult?
Size, markings, and behaviour change with age — see our full profile for detail.