Crescent Nail-tail Wallaby vs European otter

Onychogalea lunata compared with Lutra lutra

Key Differences

• Crescent Nail-tail Wallaby is Extinct while European otter is Vulnerable.

Taxonomic Classification

Rank	Crescent Nail-tail Wallaby	European otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Diprotodontia (Marsupials)	Carnivora (Carnivorans)
Family	Macropodidae (Kangaroos)	Mustelidae (Weasels & Otters)
Genus	Onychogalea	Lutra (Otters)
Species	Onychogalea lunata	Lutra lutra

Evolutionary Relationship

Crescent Nail-tail Wallaby and European otter share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Crescent Nail-tail Wallaby

EX — Extinct

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Crescent Nail-tail Wallaby	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Crescent Nail-tail Wallaby

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

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.