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Eurasian water shrew

Neomys fodiens

MammalThe IUCN classifies the…

Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Mammal
Order
Eulipotyphla
Family
Soricidae
Genus
Neomys

Habitat

Eurasian water shrews primarily inhabit freshwater environments in Europe and parts of Asia, such as streams, rivers, ponds, and marshes with dense vegetation. They prefer areas with soft banks for burrowing and ample cover, avoiding open or dry terrains. These habitats provide both foraging opportunities and protection from predators.

Diet

This species feeds mainly on aquatic and terrestrial invertebrates, including insects, crustaceans, worms, and small fish or amphibians. They hunt actively using their sensitive whiskers and paws to detect prey in water or on land, typically during dawn, dusk, or at night. Feeding behavior involves quick dives and surface foraging to capture live food.

Behavior

Eurasian water shrews are solitary and territorial, defending small home ranges with scent markings and aggressive displays. They are primarily nocturnal, spending much of their time swimming, diving, and foraging near water, while resting in burrows during the day. These shrews exhibit high energy levels and can be vocal, producing high-pitched sounds to communicate or warn off intruders.

Conservation Status

The IUCN classifies the Eurasian water shrew as Least Concern, with a stable population trend across its range. Major threats include habitat loss from urbanization, pollution of waterways, and climate change impacts on freshwater ecosystems.