Quick answer
Wild muskrats typically live around 4 years, though predation, disease, and habitat quality shift the average.
Lifespan in the wild
Most muskrats reach roughly 4 years under natural conditions. 3–5 years in the wild (longer 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, muskrats sometimes live longer than wild averages — though wild longevity reflects natural ecology.
Oldest recorded individuals
Long-lived muskrats are rare in the wild; research and zoo records help set upper limits for the species.
Sources
FAQs
How long do muskrats live in the wild?
About 4 years on average.
What affects muskrat lifespan?
Predation, habitat quality, disease, and food availability.
Do muskrats live longer in captivity?
Often yes, when nutrition and healthcare are consistent.
How can you tell a young muskrat from an adult?
Size, markings, and behaviour change with age — see our full profile for detail.