Everything about The Northern Short-tailed Shrew totally explained
The
Northern Short-tailed Shrew (
Blarina brevicauda) is a large
shrew found in central and eastern
North America from southern
Saskatchewan to
Atlantic Canada and south to
Nebraska and
Georgia. At one time, this species and the
Southern Short-tailed Shrew,
B. carolinensis, were considered to be a single species.
It is slate grey in colour with light underparts. Its body is about 10 cm in length including a 2 cm long tail. It weighs about 21 g, about the same as a
house mouse.
This animal is found in damp
hardwood and
coniferous forests and wet open areas.
It eats insects, earthworms, snails, small
rodents and plant material. This
red-toothed shrew digs through dense leaf litter and can also tunnel in moist soil. It has scent glands that release a musky secretion which repels some predators; males also use scent to mark their territory.
Mating begins in early spring and may occur until late fall. The female has 2 or 3 litters of 5 to 7 young in a nest in a tunnel or under a fallen log.
Glands in its mouth contain a
neurotoxin that allows it to immobilize larger animals such as snakes and birds. If not able to find food within about a two-hour period, these small mammals will attack and eat each other.
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