European otter vs Tree Cyanea

Lutra lutra compared with Cyanea arborea

Key Differences

• European otter is Vulnerable while Tree Cyanea is Extinct.

Taxonomic Classification

Rank	European otter	Tree Cyanea
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Cnidaria (Cnidarians)
Class	Mammalia (Mammals)	Scyphozoa (Scyphozoa)
Order	Carnivora (Carnivorans)	Semaeostomeae (Semaeostomeae)
Family	Mustelidae (Weasels & Otters)	Cyaneidae
Genus	Lutra (Otters)	Cyanea
Species	Lutra lutra	Cyanea arborea

Evolutionary Relationship

European otter and Tree Cyanea share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

Tree Cyanea

EX — Extinct

Physical Characteristics

Attribute	European otter	Tree Cyanea
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.

Tree Cyanea

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.