Eurasian Otter (Lutra lutra) — identification, habitat & look-alikes

The Eurasian Otter hunts fish in rivers, lakes, and coastal waters across much of Europe and Asia and parts of North Africa. A long body, webbed feet, and dense brown fur suit life in the water. A wild river otter seen in the United States is usually the North American River Otter.

Appearance

Appearance: It has a long, streamlined body, short legs, webbed feet, and dense brown fur. The throat and underside are paler than the back.

Look-alikes

North American river otterLontra canadensis

Location is the strongest clue: a wild river otter in the United States is the native North American species, not Eurasian otter. Casual photos may not show enough detail for a confident visual separation.

Why they get mixed upBoth are sleek, dark brown river otters with webbed feet and tapered tails.

Where it lives

Typical habitats: rivers and streams
lakes and wetlands
rocky coasts
Range: It ranges across much of Europe and Asia and parts of North Africa, but it is not native to the United States.
Preferred conditions: It needs productive water with fish and other prey, plus covered resting sites in banks, roots, rocks, or dense vegetation.

Behavior

Diet: Fish are the main prey, but the diet can also include , , , birds, eggs, insects, and small mammals.
Activity: They are usually active at dusk or at night, although coastal animals may also forage by day.
Social life: They are mostly solitary. A mother may travel with her young, and scent marks help otters communicate along a .

Life cycle

Breeding season: Breeding can occur through the year, with peaks reported in some parts of the range.
Gestation: Pregnancy lasts about 60–70 days.
Litter size: A litter usually has 2–3 cubs.

Conservation

IUCN Red List: NTNear ThreatenedCould become threatened before long

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