Quick answer
American Bisons (Bison bison) typically live around 15–20 years in the wild. Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
Key takeaway
American Bisons (Bison bison) typically live around 15–20 years in the wild. Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
American Bison lifespan in the wild
Field and museum records place most american bisons near 15–20 years in the wild. That figure blends ages at death across regions, so treat it as a planning range. Body size (450–1,000 kg (1,000–2,200 lb)) and risk lifestyle both shape the average.
What shortens american bison lives
Predation, infectious disease, injury, food shortages, and habitat fragmentation cut survival. Roadkill and human conflict matter wherever american bisons share landscapes with people.
What helps american bisons 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.
American Bison 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 american bisons in the field.
History and near extinction
Before European settlement, an estimated 30 to 60 million bison roamed North America in vast herds. In the 1800s they were slaughtered on an enormous scale for hides, meat, and as part of efforts to displace Native American peoples, leaving only a few hundred animals by 1900. Conservation efforts, including protection in Yellowstone National Park, saved the species from extinction. Today bison are a powerful symbol o
Conservation today
The American bison is listed as Near Threatened, with around 500,000 animals, though most are managed in commercial herds rather than free-ranging wild populations. Genetically pure, conservation herds are far smaller and a focus of recovery efforts. Restoring bison to native grasslands helps rebuild prairie ecosystems. In 2016 the bison was named the national mammal of the United States.
Sources
American Bison FAQs
How long do american bisons live?
American Bisons (Bison bison) typically live around 15–20 years in the wild. 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 american bison?
Bison bison — used in research and conservation listings for american bisons.
What do american bisons eat?
American Bisons eat grazer, with seasonal and regional variation in Grasslands, plains, and prairies.
Where do american bisons live?
They are associated with Grasslands, plains, and prairies. Local presence depends on food, cover, and human land use.
What is the conservation status of american bisons?
Listed in our guides as Near Threatened. Check the IUCN Red List and national assessments for the latest formal category.