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BEASTS BEGONE! Appendix A: Animal Identification

Eastern Chipmunk

Small (about 3 oz.) predominantly ground-dwelling squirrel. Brownish with several longitudinal black and tan stripes and a reddish rump. Tail is furred but not bushy. Diurnal (active during day). Frequent invader of basements, wall voids, attics, and crawl spaces. Also can become trapped in chimneys.

Access Routes

Trees and bushes close to structure; certain types of siding; brick chimneys.

Entry Sites

Similar to red squirrel except that more frequently enters near the foundation than higher on the structure. Commonly enters basements through dryer vents and accesses crawl spaces and wall voids via attached garages. Check holes in fascia boards of eaves, dormer tie-ins, architectural returns, and similar sites along the roof line; vents (roof, soffit, gable, fan); uncovered chimneys; deteriorated roofs, eaves, and walls. Entry holes can be small and difficult to find.


Clucking; high pitched alarm chatters. Scampering; gnawing.

Gnaw Marks and Food Remains

Gnaw marks on wood, plastic, nut shells, etc. Food caches (such as seeds and nuts) in burrows/dens.

Fecal Droppings: eastern chipmunk droppings

Similar to mice but often larger (about 1/4 inch long or more): dark, elongated, hard.


Except for tail, approximately 1/4 inch long. Back and sides of animal: varies in colorgray, black, reddish, whitish.
Belly: white.
Tail: each hair partitioned into reddish, black, white (tip) segments; approximately 1/2 inch long.

Other Signs

Body rub marks at entry holes. Runways in insulation.

Tracks: eastern chipmunk tracks   Front: less than 1 in.  Hind: 1 7/8 in.

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