Missouri’s occurrence databases hold 250 records of the northern short-tailed shrew, split between iNaturalist and GBIF entries. That count says more about where trapping surveys and casual sightings have happened than about how many shrews are moving through the leaf litter.
Ozark leaf litter and river-bottom soil
Records cluster around Table Rock State Park’s oak-hickory forest in the White River hills of the Ozark Plateau, where deep leaf litter and loose forest soil give a burrowing shrew plenty of cover to tunnel through. A second thread of records follows Missouri River corridor parks, where moist bottomland forest offers the same kind of leaf-litter floor. Both settings share what this species actually needs: damp ground, dense cover, and a steady supply of invertebrates underfoot.
A shrew that hunts with venom
The northern short-tailed shrew is one of the few venomous mammals in North America, using toxic saliva delivered through a bite to subdue earthworms, insects, snails, and even small vertebrates it can overpower. Its metabolism runs hot enough that it has to feed almost constantly, day and night, which is why records here show activity spread across every month rather than clustering into one obvious season.
Status in Missouri
NatureServe ranks the northern short-tailed shrew S4, apparently secure, in Missouri, a native species with no nonindigenous record from USGS NAS. Wherever Ozark forest floor or river-bottom leaf litter stays damp and undisturbed, this shrew has cover enough to keep tunneling through it.
