European otter vs Gray-bellied Rice Rat

Lutra lutra compared with Nephelomys moerex

Key Differences

• European otter is Vulnerable while Gray-bellied Rice Rat is Extinct.

Taxonomic Classification

Rank	European otter	Gray-bellied Rice Rat
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order	Carnivora (bộ Ăn thịt)	Rodentia (Bộ Gặm nhấm)
Family	Mustelidae (Weasels & Otters)	Cricetidae
Genus	Lutra (Otters)	Nephelomys
Species	Lutra lutra	Nephelomys moerex

Evolutionary Relationship

European otter and Gray-bellied Rice Rat share a common ancestor at the Class level: Mammalia. (lớp Thú)

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

Gray-bellied Rice Rat

EX — Extinct

Physical Characteristics

Attribute	European otter	Gray-bellied Rice Rat
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.

Gray-bellied Rice Rat

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.