American short-tailed shrew
Encyclopedia
The genus Blarina is a group of relatively large shrews with relatively short tails found in North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

. They have 32 teeth and are in the red-toothed shrew
Red-toothed shrew
The red-toothed shrews of the subfamily Soricinae are one of three living subfamilies of shrews, along with Crocidurinae and Myosoricinae . In addition, the family contains the extinct subfamilies Limnoecinae, Crocidosoricinae, Allosoricinae and Heterosoricinae...

 subfamily.

They generally have dark fur and thick feet. The saliva of these animals
Venomous mammals
Venomous mammals are animals of the class Mammalia that produce venom, which they use to kill or disable prey, or to defend themselves from predators. In modern nature, venomous mammals are quite rare. Venom is much more common among other vertebrates; there are many more species of venomous...

 is toxic and is used to subdue prey.

The list of species is:
  • Northern Short-tailed Shrew
    Northern Short-tailed Shrew
    The Northern Short-tailed Shrew is the largest shrew in the genus Blarina, and occurs in the northeastern region of North America. It is a semifossorial, highly active and voracious insectivore and is present in a variety of habitats. It is notable in that it is one of the few venomous mammals...

     (B. brevicauda)
  • Southern Short-tailed Shrew
    Southern Short-tailed Shrew
    The Southern Short-tailed Shrew is a small, gray, short-tailed mammal that inhabits the eastern United States. The overall appearance is somewhat like a rodent, but is a member of the order Soricomorpha and should not be confused with a member of the order Rodentia. This shrew has a long, pointed...

     (B. carolinensis)
  • Elliot's Short-tailed Shrew
    Elliot's Short-tailed Shrew
    Elliot's short-tailed shrew is a small, slate grey, short-tailed species of shrew. Its common name comes from Daniel Giraud Elliot, who first described the species in 1899.-Description:...

     (B. hylophaga)
  • Everglades Short-tailed Shrew
    Everglades Short-tailed Shrew
    Blarina peninsulae is a species of mammal in the Blarina genus....

    (B. peninsulae)
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