Minnesota’s occurrence databases hold 654 records for the northern short-tailed shrew, with Hennepin, Ramsey, and Cook counties leading and the Mississippi National River and Recreation Area and Superior National Forest the busiest named sites. Reports like these depend heavily on someone finding a shrew under a log or in a trap line, so the count tracks search effort as much as anything else.
A venomous hunter working the leaf litter
Few Minnesota mammals carry a weapon this specific: short-tailed shrew saliva contains a toxin strong enough to subdue insects, worms, snails, and even prey as large as a vole, and the shrew will cache paralyzed but still-living prey in an underground larder for later. It hunts by scent and touch more than sight, tunneling through leaf litter and loose soil in forest statewide, from the rich duff of the southeastern driftless bluff country to the thick litter of the northern conifer belt.
Active all winter, just out of sight
Unlike animals that den up for the cold months, a short-tailed shrew stays active through a Minnesota winter in the subnivean space, the layer of loosely packed snow insulated enough to let small mammals tunnel and hunt above the frozen ground. Records still peak from June through October, but that’s a detection pattern rather than a seasonal shutdown: people simply spend more time turning logs and setting traps during the warmer months than they do digging through a snowpack.
Status in Minnesota
NatureServe ranks the northern short-tailed shrew S5, secure, in Minnesota, and it’s native to the state. Its reliance on leaf litter and loose soil across both of the state’s forested regions, driftless and boreal alike, keeps it well distributed even though it’s rarely seen.
