loutre, loutre deurope vs Merriam’s Pocket Mouse

Lutra lutra compared with Perognathus merriami

Key Differences

• loutre, loutre deurope is Vulnerable while Merriam’s Pocket Mouse is Least Concern.

Taxonomic Classification

Rank	loutre, loutre deurope	Merriam’s Pocket Mouse
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mammifères)	Mammalia (mammifères)
Order	Carnivora (carnivores)	Rodentia (Rodents)
Family	Mustelidae (Weasels & Otters)	Heteromyidae
Genus	Lutra (Otters)	Perognathus
Species	Lutra lutra	Perognathus merriami

Evolutionary Relationship

loutre, loutre deurope and Merriam’s Pocket Mouse share a common ancestor at the Class level: Mammalia. (mammifères)

Conservation Status

loutre, loutre deurope

VU — Vulnerable

Trend: Stable →

Merriam’s Pocket Mouse

LC — Least Concern

Physical Characteristics

Attribute	loutre, loutre deurope	Merriam’s Pocket Mouse
Diet	Carnivore	—
Average Lifespan	10 years	—
Average Length	1.0 m	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

loutre, loutre deurope

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.

Merriam’s Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

loutre, loutre deurope

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.