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The American water shrew is a sexually dimorphic species in which the males are generally larger and heavier than the females. The size of the shrew is 130–170 mm (5.1–6.7 in) and weight is 8–18 g (0.28–0.63 oz).
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]
Shrews need to consume 200% to 300% of their body weight in food each day in order to survive; to achieve this they must eat every 2 to 3 hours, and they will starve if they go without food much longer than that. They do not hibernate because their bodies are too small to store sufficient fat reserves and they have a short fasting duration. [5] [7]
The Eurasian water shrew (Neomys fodiens), known in the United Kingdom as the water shrew, is a relatively large shrew, up to 10 cm (4 in) long, with a tail up to three-quarters as long again. It has short, dark fur, often with a few white tufts, a white belly, and a few stiff hairs around the feet and tail.
Shrews of similar size have a gestation period around 21 days, but no definitive information on the ornate shrew is available. [17] A litter can consist of 4 to 6 baby shrews which are expected to live for about 12 months. [7] They do not hibernate however some species can enter a state of inactivity in harsh situations such as extreme cold. [7]
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 ...
During the reproductive season, food consumption is greatest. [13] They also eat plants. Compared to other shrews in the genus Sorex, Trowbridge's shrews eat more vegetable matter. [1] During winter months, they may feed on conifer seeds, such as Douglas-fir and pine, as well as other plant seeds. [12]
Water shrew may refer to any of several species of semiaquatic red-toothed shrews: Asiatic water shrews (Chimarrogale spp.) Malayan water shrew (C. hantu) Himalayan water shrew (C. himalayica) Sunda water shrew (C. phaeura) Japanese water shrew (C. platycephala) Chinese water shrew (C. styani) Sumatran water shrew (C. sumatrana) Nectogale