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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]
The shrew subfamily Soricinae consists of thirteen genera.The majority of the species are contained within Cryptotis, with 41 species, and Sorex, with 76 species.The remaining shrews are split between Chodsigoa with eight species; Chimarrogale with six; Anourosorex, Episoriculus, Neomys, and Notiosorex with four species each; Blarina and Blarinella with three species each, and Megasorex ...
The genus Blarina, commonly called short-tailed shrews, is a genus of relatively large shrews with relatively short tails found in North America. Description [ edit ]
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]
Elliot's short-tailed shrew is similar in appearance to the closely related southern short-tailed shrew, although slightly larger on average, and was long thought to belong to the same species. It is a heavily built shrew with short legs and tail, and a long, pointed snout with long whiskers . [ 4 ]
The American water shrew or northern water shrew (Sorex palustris) is a shrew found in the nearctic faunal region located throughout the mountain ranges of the northern United States and in Canada and Alaska. [3] The organism resides in semi-aquatic habitats, [4] and is known for being the smallest mammalian diver. [5]
A much larger shrew, the northern short-tailed shrew at around 21 g (0.74 oz), was the leading prey in Glenwood, Minnesota at 36% of 81 prey items. [110] This prey species also is taken quite regularly in several other parts of the range, as well as a closely-related species. [151]
The American pygmy shrew is the smallest mammal native to North America and is one of the smallest mammals in the world, just slightly larger than the Etruscan shrew of Eurasia. Its body is about 5 cm (2 in) long including a 2-cm-long tail, and it weighs about 2.0 to 4.5 g (0.07 to 0.16 oz). [ 9 ]