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The northern short-tailed shrew (Blarina brevicauda) is the largest shrew in the genus Blarina, [3] and occurs in the northeastern region of North America. [4] It is a semifossorial, highly active, and voracious insectivore and is present in a variety of habitats like broadleaved and pine forests among shrubs and hedges as well as grassy river banks. [5]
Members of this genus, known as long-tailed shrews, are the only members of the tribe Soricini of the subfamily Soricinae (red-toothed shrews). They have 32 teeth. They have 32 teeth. These animals have long, pointed snouts, small ears, which are often not visible, and scent glands located on the sides of their bodies.
The northern short-tailed shrew is one of several venomous shrews. The northern short-tailed shrew (Blarina brevicauda), Mediterranean water shrew (Neomys anomalus), and Eurasian water shrew (Neomys fodiens) are capable of delivering a venomous bite.
Soricidin is a paralytic oligopeptide found in the venomous saliva of the northern short-tailed shrew (Blarina brevicauda); [1] in the wild, shrews use it to paralyze their prey (typically insects). [2] Its name is a reference to "Soricidae", the family to which shrews belong. [3]
Notiosorex shrews have a fossil history that extends to the Miocene (i.e., mid-Hemphillian). The geographic distribution of the genus has always been in the southwestern United States and northern Mexico.
The marsh shrew typically has a longer snout than that of the American water shrew, which is more streamlined when viewed from the side. [4] The marsh shrew's skull is relatively large, [3] and its condylobasal skull length is usually greater than 19.3 mm (0.76 in). [4] There is a distinctive, downward-sloping curve along the snout (rostrum). [3]
Soricomorpha (from Greek "shrew-form") is a formerly used taxon within the class of mammals.In the past it formed a significant group within the former order Insectivora. ...
The house shrew has a uniform, short, dense fur of mid-grey to brownish-grey color. The tail is thick at the base and a bit narrower at the tip, and is covered with a few long, bristle-like hairs that are thinly scattered. They have short legs with five clawed toes. They have small external ears and an elongated snout.