Shrews are small mole-like mammals classified in the order Eulipotyphla. True shrews are not to be confused with treeshrews, otter shrews, elephant shrews, West Indies shrews, or marsupial shrews, which belong to different families or orders.
The Etruscan shrew, also known as the Etruscan pygmy shrew or the white-toothed pygmy shrew, is the smallest known extant mammal by mass, weighing only about 1.8 g (0.063 oz) on average.
The white-toothed shrews or Crocidurinae are one of three subfamilies of the shrew family Soricidae.
The common shrew, also known as the Eurasian shrew, is the most common shrew, and one of the most common mammals, throughout Northern Europe, including Great Britain, but excluding Ireland. It is 55 to 82 millimetres long and weighs 5 to 12 grams, and has velvety dark brown fur with a pale underside. It is one of the rare venomous mammals. Juvenile shrews have lighter fur until their first moult. The common shrew has small eyes, a pointed, mobile snout and red-tipped teeth. It has a life span of approximately 14 months.
The Eurasian water shrew, 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. It lives close to fresh water, hunting aquatic prey in the water and nearby. Its fur traps bubbles of air in the water which greatly aids its buoyancy, but requires it to anchor itself to remain underwater for more than the briefest of dives.
The lesser white-toothed shrew is a tiny shrew with a widespread distribution in Africa, Asia and Europe. Its preferred habitat is scrub and gardens and it feeds on insects, arachnids, worms, gastropods, newts and small rodents, though its diet usually varies according to the biotope where it lives. The closely related Asian lesser white-toothed shrew was once included in this species, but is now considered to be a separate species.
The Asian house shrew is a shrew species native to South and Southeast Asia that has been listed as Least Concern on the IUCN Red List since 2008 because of its large population and wide distribution. It has been introduced in several West Asian and East African countries. It is considered an invasive species and implicated in the demise of several island lizard species.
The São Tomé shrew is a white-toothed shrew about 3.0 in (7.6 cm) long found only on São Tomé Island, São Tomé and Príncipe. It is listed as a critically endangered species due to habitat loss and a restricted range. It was discovered in 1886. The population continues to decrease, making these animals rare. It is found only on São Tomé Island, a small island that is actually a shield volcano that rises out of the Atlantic Ocean.
Wimmer's shrew is a white-toothed shrew found only in Côte d'Ivoire. It is listed as a critically endangered species due to habitat loss and a restricted range.
The genus Crocidura is one of nine genera of the shrew subfamily Crocidurinae. Members of the genus are commonly called white-toothed shrews or musk shrews, although both also apply to all of the species in the subfamily. With over 180 species, Crocidura contains the most species of any mammal genus. The name Crocidura means "woolly tail", because the tail of Crocidura species are covered in short hairs interspersed with longer ones.
The Dsinezumi shrew, also known as the Japanese white-toothed shrew, is a species of musk shrew found in Japan and on Korea's Jeju Island. It is widespread, and considered to be of "least concern" by the IUCN.
The North African hedgehog or Algerian hedgehog, is a mammal species in the family Erinaceidae native to Algeria, Libya, Malta, Morocco, Spain, and Tunisia. Little is known about this hedgehog, even though the most common breed of domesticated hedgehogs is a result of crossing a four-toed hedgehog with a North African hedgehog. Because this species of hedgehog is native to Africa, it has been suggested that it was introduced by humans to the other countries where it is now found, including Spain and the Canary Islands. Of the four African hedgehog species, the North African hedgehog is the only one of these hedgehogs that occurs outside Africa. Because the North African hedgehog has such a wide habitat range and has a seemingly stable population, both in the wild and in the domesticated capacity, it does not appear to currently be at risk.
The Cyrenaica shrew or Alexander's shrew is a species of white-toothed shrew in the family Soricidae which is endemic to Libya.
Hildegarde's shrew is a species of mammal in the family Soricidae. It is found in Burundi, Cameroon, Central African Republic, Republic of the Congo, Democratic Republic of the Congo, Ethiopia, Kenya, Rwanda, and Tanzania. Considered by some authorities to be a subspecies of Crocidura gracilipes, it is now recognised as a separate species, with a diploid chromosome number of 2n = 52. This is one of three species of small mammal named by the British zoologist Oldfield Thomas in honour of anthropologist Hildegarde Beatrice Hinde.
The bicolored shrew or bicoloured white-toothed shrew is a species of mammal in the family Soricidae. It is found in eastern, central and southern Europe and in western Asia. It is a nocturnal species and feeds on insects and other small creatures. Several litters of young are born during the warmer months of the year in a nest of dry grasses in a concealed location.
The West African pygmy shrew or obscure white-toothed shrew is a species of mammal in the family Soricidae. It is found in Ivory Coast, Ghana, Guinea, Liberia, and Sierra Leone. Its natural habitat is subtropical or tropical moist lowland forests.
The African giant shrew is a species of white-toothed shrew. It also is known as, Mann's musk shrew, Euchareena's musk shrew, or Olivier's shrew. It is native to Africa, where it has a widespread distribution and occurs in many types of habitat. Its natural habitats are subtropical or tropical dry forest, subtropical or tropical moist lowland forest, subtropical or tropical moist montane forest, dry savanna, moist savanna, arable land, rural gardens, urban areas, and heavily degraded former forest. In the Nile Valley it is found near human habitation, where it is considered to be a pest. It is a common species and is listed by the International Union for Conservation of Nature as being of "least concern".
Whitaker's shrew is a species of mammal in the family Soricidae. It is found in Western Sahara, Algeria, Morocco, Tunisia. Its natural habitats are subtropical or tropical dry shrubland, rocky and sandy coasts. It is a fairly common species and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".
The Christmas Island shrew, also known as the Christmas Island musk-shrew is an extremely rare or possibly extinct shrew from Christmas Island. It was variously placed as subspecies of the Asian gray shrew or the Southeast Asian shrew, but morphological differences and the large distance between the species indicate that it is an entirely distinct species.
