European otter vs Japanese Weasel

Lutra lutra compared with Mustela itatsi

Key Differences

  • European otter is Vulnerable while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank European otter Japanese Weasel
Kingdom same Animalia (животные) Animalia (животные)
Phylum same Chordata (хордовые) Chordata (хордовые)
Class same Mammalia (млекопитающие) Mammalia (млекопитающие)
Order same Carnivora (хищные) Carnivora (хищные)
Family same Mustelidae (Weasels & Otters) Mustelidae (Weasels & Otters)
Genus Lutra (Otters) Mustela
Species Lutra lutra Mustela itatsi

Evolutionary Relationship

European otter and Japanese Weasel share a common ancestor at the Family level: Mustelidae. (Weasels & Otters)

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute European otter Japanese Weasel
Diet Carnivore —
Average Lifespan 10 years —
Average Length 1.0 m —
Average Weight 10.0 kg —

Habitat & Geographic Range

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Japanese Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Japan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.

Japanese Weasel

No description available.

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