How long is a mouse’s lifespan?

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Mice live 1-3 years; the Gambian pouched rat lives longer, some up to 12 years, but most live around 1-3. With many predators, accidents shorten life.

But they breed strongly, mating year-round with about 21-day gestation and 6-8 litters a year of 5-10 pups.

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