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All shrews are tiny, most no larger than a mouse. The largest species is the Asian house shrew (Suncus murinus) of tropical Asia, which is about 15 cm (6 in) long and weighs around 100 g (3 + 1 ⁄ 2 oz) [2] The Etruscan shrew (Suncus etruscus), at about 3.5 cm (1 + 3 ⁄ 8 in) and 1.8 grams (28 grains), is the smallest known living terrestrial mammal.
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]
Common & Eurasian pygmy shrews (genus Sorex), size comparison. The common shrew is not an endangered species, but in Great Britain it, like other shrews, is protected from certain methods of killing by the Wildlife and Countryside Act of 1981. [16] In Britain, shrews can be found at densities of up to one per 200 m 2 (240 yd²) in
The southern short-tailed shrew is the smallest shrew in its genus, measuring 7 to 10 cm (2.8 to 3.9 in) in total length, and weighing less than 14 g (0.49 oz).It has a comparatively heavy body, with short limbs and a thick neck, a long, pointed snout and ears that are nearly concealed by its soft, dense fur.
The North American least shrew mostly dwells in mesic grasslands, marshes, and meadows. [5] Most shrews prefer these wet habitats, but the least shrew will also inhabit dry upland regions. [4] This species can be found in meadows, fields, and weedy areas, where the vegetation attracts its insect diet. [4] [6]
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]
Studies on this shrew have suggested its suitability for use in laboratory studies of reproduction and nutrition. [9] It is widespread and found in all habitats, including deserts and human habitations. [10] The house shrew has a habit of moving quickly along the edges of the walls when it enters human habitations.
The ornate shrew is found along portions of the west coast of North America and a few near shore islands. The northern extent is around 39 degrees latitude in California. The range extends south into the Baja California peninsula. There is a stretch of territory through Baja where the shrew is not found, then it is found again near the southern ...