European otter vs Post Dwarf Weaver

Lutra lutra compared with Erigone atra

Key Differences

European otter is Vulnerable while Post Dwarf Weaver is Least Concern.

Taxonomic Classification

Rank	European otter	Post Dwarf Weaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Arachnida (Arachnids)
Order	Carnivora (Carnivorans)	Araneae (Araneae)
Family	Mustelidae (Weasels & Otters)	Linyphiidae
Genus	Lutra (Otters)	Erigone
Species	Lutra lutra	Erigone atra

Evolutionary Relationship

European otter and Post Dwarf Weaver share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

Post Dwarf Weaver

LC — Least Concern

Physical Characteristics

Attribute	European otter	Post Dwarf Weaver
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.

Post Dwarf Weaver

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Widely distributed across Europe (4 countries), North America (Canada, United States), and South America (Ecuador).

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.