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Squirrels & Wildlife

How Long Do Chipmunks Live? And Why They Dig Up Pots

Wild chipmunks rarely see three years — predators and winter mortality see to that. Realistic lifespan, what they eat, and why flower pots are such an easy target.

By The Grow In Backyard Team 2 min read Save to Pinterest — opens Pinterest in a new tab
A chipmunk with cheek pouches stuffed full of foraged food
Photo: Rhododendrites, CC BY-SA 4.0, via Wikimedia Commons
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Chipmunks share most of the same wild-versus-kept lifespan pattern as their larger tree-squirrel relatives, for largely the same reasons — and the same small size that makes them appealing to watch also makes them vulnerable to nearly everything.

Why so few reach old age

Chipmunk lifespan and what limits it
FactorEffect
Predation (hawks, snakes, cats, foxes)The leading cause of death, especially for juveniles
Winter conditionsEven with caching, a hard winter causes real mortality
Small body sizeLimited fat reserves and more predators able to take them
Captivity / no predatorsLifespan roughly triples

The pattern is the same one that shows up across small mammals generally: a short average driven by heavy losses in the first year, and a much better outlook for any individual that survives to adulthood.

Not quite hibernation

Chipmunks spend winter underground in a burrow system, in a state of torpor — a lowered metabolic and body-temperature state — but they periodically rouse themselves to eat from the food caches they built up in autumn, rather than remaining continuously dormant the way a groundhog does. This is why chipmunk activity above ground effectively disappears for months at a time without the animal being in true uninterrupted hibernation.

What they actually eat, and why pots get hit

Chipmunks forage seeds, nuts, berries, and some insects, carrying food in their cheek pouches back to underground caches — the same caching strategy squirrels use, on a smaller scale.

Why a potted plant looks worse hit than a garden bed

Container soil is loose and easy to dig, and it often already contains exactly what a chipmunk is looking for — a buried bulb, recently sown seed, or a good caching spot. The same digging behaviour happens in open garden soil, but it is far more visually concentrated and obvious in the confined space of a pot, which is why potted plants often seem singled out when the animal is really just doing what it does everywhere.

A layer of coarse gravel or mesh over the soil surface in vulnerable pots, and keeping bulbs at a reasonable planting depth, reduces the appeal without needing to exclude chipmunks from the area entirely. The wider approach to protecting garden plants from foraging animals generally is covered in will squirrels eat your garden — most of it applies equally to chipmunks.

Common questions

What is the life expectancy of a chipmunk?

Around 2 to 3 years is typical in the wild, with the great majority of that mortality happening in the first year. Chipmunks kept in captivity, with predators removed, can live 8 years or more — a similar wild-versus-kept gap to squirrels, and for the same underlying reason.

Do chipmunks hibernate?

Not in the deep, continuous sense that some other mammals do. Chipmunks enter a lighter torpor through winter, waking periodically to feed from the food they cached in their burrow, rather than sleeping through the entire season without eating.

What do chipmunks eat?

Primarily seeds, nuts, berries, and some insects, foraged and carried in their cheek pouches back to underground caches. They will also eat bulbs and germinating seeds in garden beds, which is the main source of the plant damage they cause.

Why do chipmunks dig in flower pots specifically?

Container soil is loose, easy to dig, and often already holds bulbs, seeds, or buried food they consider worth investigating or caching in. The confined space also concentrates the visible damage compared to the same digging spread across open garden soil, which is why potted plants often look disproportionately affected.

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