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 American water shrew (Sorex palustris) is a mole-like mammal found throughout North America. This tiny animal lives in semi-aquatic habitats and is known for being the smallest mammalian diver. Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal",...

Water shrews, Sorex palustris, are found throughout Alaska and Canada to the northern mountain regions of the United States. (Beneski and Stinson, 1987) Biogeographic Regions; nearctic. native; Habitat. Water shrews are common inhabitants of northern forests. As the name would suggest, water shrews are often found around streams and other ...

The American water shrew is a large, long-tailed soricid with a long, pointed snout. Its measurements are: total length, 130–156 mm; tail, 58–71 mm; hind foot, 18–20 mm; weight, 8–18 g. The dental formula of the American water shrew is: I 3/1, C 1/1, P 3/1, M 3/3 = 32 (Figure 1). The eyes and ears are small and concealed in the pelage.

The water shrew dives to the bottom of small bodies of water to hunt for aquatic insects. Their favorite foods include the larvae and nymphs of flies, but they will also eat small fish, fish eggs and salamanders.

The North American water shrew (S. palustris) is found throughout much of the western United States and Canada, from the plains to the mountains. It is the smallest and least specialized species of water shrew, weighing up to 18 grams, with a …

The water shrew is the largest long-tailed shrew in the eastern United States, having an approximate total length of 6 inches and weighing 12-18 grams. It is easily distinguishable from other shrews of the region by it’s large, webbed hindfeet that are fringed with bristle-like hairs.

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2023年5月17日 · The American water shrew, aka northern water shrew, can be found from Canada down into the United States. They prefer habitats near mud flats, springs, streams, and can even be found in beaver dens.

The American water shrew ( Sorex palustris) or northern water shrew, is found in the nearctic faunal region located throughout the mountain ranges of northern United States and in Canada and Alaska.