Head to head
Least Chipmunk vs Eastern Chipmunk
The least chipmunk and eastern chipmunk are both small, striped ground squirrels that store food in cheek pouches, but they differ in size, range, and just how communal-free their approach to winter dormancy really is.
| Least Chipmunk | Eastern Chipmunk | |
|---|---|---|
| Scientific name | Tamias minimus | Tamias striatus |
| Relative size | Smallest North American chipmunk | Larger |
| Range | Very broad, much of Canada and the western/northern US | Eastern North America only |
| Habitat | Forest and mountains | Forest and grassland |
| Winter dormancy | Light, intermittent hibernation | Light, intermittent hibernation (torpor) |
| Burrow entrance | Hidden, no soil mound | Hidden, no soil mound |
| Conservation status | Least Concern | Least Concern |
| Diet | Omnivore | Omnivore |
Least Chipmunk vs Eastern Chipmunk: common questions
Which is smaller, the least chipmunk or the eastern chipmunk?
The least chipmunk is smaller, in fact the smallest chipmunk species found anywhere in North America, while the eastern chipmunk is somewhat larger despite being the more commonly recognised of the two across gardens and woodland edges in the eastern part of the continent.
Why does the least chipmunk have such a huge range compared to the eastern chipmunk?
The least chipmunk's ability to occupy an enormous variety of habitats, from dense forest understory to open, rocky mountain terrain, has allowed it to spread across much of Canada and the western and northern United States, a far broader distribution than the eastern chipmunk's range confined to eastern North America.
Do both chipmunks hibernate the same way?
Yes, both species enter a lighter, intermittent form of hibernation rather than sleeping continuously through winter, periodically waking to feed from food they cached in their burrow beforehand, a shared strategy that relies on stored food rather than fat reserves alone.