Isolated populations occur in Shasta and Plumas cos. Optimal habitats are Douglas-fir, redwood, mixed conifer, montane hardwood and montane riparian with dense, moist understories. Also found in wet meadow and fresh emergent wetland habitats. Forages in subsurface runways, shallow burrows, litter and understory vegetation. Shrew-moles have been observed climbing in shrubs.
Nest consists of damp leaves in an underground burrow.
Occasionally may nest above ground in a stump or log. Damp ravines in forest habitat are preferred, and open areas are avoided. Friable, well-drained soils are preferred, but this species may be common in swampy areas as well. Populations are reduced by logging and grazing. Yearlong activity, both diurnal and nocturnal.