Quick answer
Brown Bears (Ursus arctos) typically live around 20–25 years in the wild (up to 35 in captivity). Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
Key takeaway
Brown Bears (Ursus arctos) typically live around 20–25 years in the wild (up to 35 in captivity). Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
Brown Bear lifespan in the wild
Field and museum records place most brown bears near 20–25 years in the wild (up to 35 in captivity). That figure blends ages at death across regions, so treat it as a planning range. Body size (130–600 kg (290–1,320 lb) depending on subspecies and season) and risk lifestyle both shape the average.
What shortens brown bear lives
Predation, infectious disease, injury, food shortages, and habitat fragmentation cut survival. Roadkill and human conflict matter wherever brown bears share landscapes with people.
What helps brown bears live longer
Connected habitat, low chronic stress, and reliable food support longevity. For captive or domestic relatives, species-correct diet and veterinary screening matter more than generic “pet” advice.
Brown Bear life stages
Juveniles usually face higher mortality than prime adults. Older animals may move less, show dental wear, or lose body condition — useful signs when ageing brown bears in the field.
Range and subspecies
Brown bears once ranged across much of western North America, Europe, and temperate Asia. Today they persist in Scandinavia, the Carpathians, the Rockies, Alaska, and Russia's Kamchatka Peninsula. The North American grizzly and the Kodiak bear are well-known subspecies of Ursus arctos.
Conservation and human conflict
Globally listed Least Concern, brown bears nevertheless face local declines from habitat fragmentation, poaching, and conflict with livestock. Responsible bear-country practices — securing food, carrying deterrents, and giving mothers with cubs space — reduce dangerous encounters.
Sources
Brown Bear FAQs
How long do brown bears live?
Brown Bears (Ursus arctos) typically live around 20–25 years in the wild (up to 35 in captivity). Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
What is the scientific name of the brown bear?
Ursus arctos — used in research and conservation listings for brown bears.
What do brown bears eat?
Brown Bears eat berries, fish, roots, insects, and carrion, with seasonal and regional variation in Forests, mountains, and tundra across the Northern Hemisphere.
Where do brown bears live?
They are associated with Forests, mountains, and tundra across the Northern Hemisphere. Local presence depends on food, cover, and human land use.
What is the conservation status of brown bears?
Listed in our guides as Least Concern. Check the IUCN Red List and national assessments for the latest formal category.