Quick answer
Muskrats (Ondatra zibethicus) typically live around 3–5 years in the wild (longer 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
Muskrats (Ondatra zibethicus) typically live around 3–5 years in the wild (longer in captivity). Wild averages fall when predation, disease, or habitat loss rise; managed populations can live longer with stable food and veterinary care.
Muskrat lifespan in the wild
Field and museum records place most muskrats near 3–5 years in the wild (longer in captivity). That figure blends ages at death across regions, so treat it as a planning range. Body size (0.6–2 kg (1.3–4.4 lb); compact and dense-furred) and risk lifestyle both shape the average.
What shortens muskrat lives
Predation, infectious disease, injury, food shortages, and habitat fragmentation cut survival. Roadkill and human conflict matter wherever muskrats share landscapes with people.
What helps muskrats 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.
Muskrat 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 muskrats in the field.
Fur trade and introductions
Muskrat fur ('musquash') supported a major trapping industry across North America for centuries. Deliberate and accidental introductions established populations in Europe and Asia, where they sometimes damage dikes and compete with native water voles.
Ecology and management
Listed Least Concern, muskrats remain abundant in suitable wetlands but face habitat loss from drainage and pollution. In some areas they are managed as pests when burrowing undermines levees; elsewhere they are valued as wetland indicators and fur-bearer resources.
Sources
Muskrat FAQs
How long do muskrats live?
Muskrats (Ondatra zibethicus) typically live around 3–5 years in the wild (longer 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 muskrat?
Ondatra zibethicus — used in research and conservation listings for muskrats.
What do muskrats eat?
Muskrats eat cattails, pondweed, roots, and occasional mussels, with seasonal and regional variation in Marshes, ponds, slow rivers, and wetlands across temperate North America.
Where do muskrats live?
They are associated with Marshes, ponds, slow rivers, and wetlands across temperate North America. Local presence depends on food, cover, and human land use.
What is the conservation status of muskrats?
Listed in our guides as Least Concern. Check the IUCN Red List and national assessments for the latest formal category.