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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]
These include the Eurasian or common shrew (Sorex araneus) and the American vagrant shrew (Sorex vagrans) and northern short-tailed shrew (Blarina brevicauda). These shrews emit series of ultrasonic squeaks. [15] [16] By nature the shrew sounds, unlike those of bats, are low-amplitude, broadband, multiharmonic, and frequency modulated. [16]
The common shrew's carnivorous and insectivorous diet consists of insects, slugs, spiders, worms, amphibians and small rodents. 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.
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.
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]
Eulipotyphla (/ ˌ j uː l ɪ p oʊ ˈ t ɪ f l ə /, from eu-+ Lipotyphla, meaning "truly fat and blind"; sometimes called true insectivores [1]) is an order of mammals comprising the Erinaceidae (hedgehogs and gymnures); Solenodontidae (solenodons); Talpidae (moles, shrew-like moles and desmans); and Soricidae (true shrews) families.
Crawford's gray shrew is one of the smallest desert mammals and one of the world's smallest homeotherms.When fully grown, it will only grow to a size of about 1.5 to 2 in (3.8 to 5.1 cm) long, half of which is the tail, and it will only grow to a weight of about 3 to 5 g (0.11 to 0.18 oz).
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 ]