European otter vs Olive-gray Thomasomys

Lutra lutra compared with Thomasomys cinereus

Key Differences

• European otter is Vulnerable while Olive-gray Thomasomys is Least Concern.

Taxonomic Classification

Rank	European otter	Olive-gray Thomasomys
Kingdom same	Animalia (प्राणी)	Animalia (प्राणी)
Phylum same	Chordata (रज्जुकी)	Chordata (रज्जुकी)
Class same	Mammalia (स्तनधारी)	Mammalia (स्तनधारी)
Order	Carnivora (मांसाहारी गण)	Rodentia (कृंतक)
Family	Mustelidae (Weasels & Otters)	Cricetidae
Genus	Lutra (Otters)	Thomasomys
Species	Lutra lutra	Thomasomys cinereus

Evolutionary Relationship

European otter and Olive-gray Thomasomys share a common ancestor at the Class level: Mammalia. (स्तनधारी)

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

Olive-gray Thomasomys

LC — Least Concern

Physical Characteristics

Attribute	European otter	Olive-gray Thomasomys
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.

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in 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.