Caucasian Alder vs European otter

Alnus subcordata compared with Lutra lutra

Key Differences

• Caucasian Alder is Least Concern while European otter is Vulnerable.

Taxonomic Classification

Rank	Caucasian Alder	European otter
Kingdom	Plantae (نباتات)	Animalia (حيوانات)
Phylum	Magnoliophyta (كاسيات البذور)	Chordata (حبليات)
Class	Magnoliopsida (ماغنولانية)	Mammalia (ثدييات)
Order	Fagales (بلوطيات)	Carnivora (لواحم)
Family	Betulaceae	Mustelidae (Weasels & Otters)
Genus	Alnus	Lutra (Otters)
Species	Alnus subcordata	Lutra lutra

Conservation Status

Caucasian Alder

LC — Least Concern

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Caucasian Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.

Caucasian Alder

The Caucasian Alder (Alnus subcordata) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.