Cuetzalan Salamander vs European otter

Aquiloeurycea quetzalanensis compared with Lutra lutra

Key Differences

• Cuetzalan Salamander is Critically Endangered while European otter is Vulnerable.

Taxonomic Classification

Rank	Cuetzalan Salamander	European otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Mammalia (Mammals)
Order	Caudata (Caudata)	Carnivora (Carnivorans)
Family	Plethodontidae	Mustelidae (Weasels & Otters)
Genus	Aquiloeurycea	Lutra (Otters)
Species	Aquiloeurycea quetzalanensis	Lutra lutra

Evolutionary Relationship

Cuetzalan Salamander and European otter share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Cuetzalan Salamander

CR — Critically Endangered

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Cuetzalan Salamander

Habitat

Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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.

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.