ODNR Division of Wildlife - A to Z Species Guide - Northern Short-tailed Shrew

 Northern Short-tailed Shrew

northern short-tailed shrew
This is the largest shrew in North America. The salivary glands of the Northern short-tailed shrew produce a toxic material which helps in subduing its prey.

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Northern Short-tailed Shrew
Blarina brevicauda

At-a-Glance

• Peak Breeding Activity: March-September

• Gestation period : 21 days

• Litter Size: 5-8

• Young are weaned: 20 days after birth

• Typical Foods: invertebrates, small vertebrates and plant material

 
Description
This species has short, dense, slate-gray colored fur and a small tail. The snout is also short and heavy.

Habitat and Habits
Short-tailed shrews are not restricted to a particular habitat, but seem to prefer forests, grasslands, marshes, and brushy areas. They are active year-round, both day and night.

Reproduction and Care of the Young
The breeding season occurs from March to September with females producing up to three litters per year. Nests are made of shredded grass and leaves. They are located in tunnels or under rocks or logs.