Eurasian beaver vs Smith's Thorius

Castor fiber compared with Thorius smithi

Key Differences

• Eurasian beaver is Vulnerable while Smith's Thorius is Critically Endangered.

Taxonomic Classification

Rank	Eurasian beaver	Smith's Thorius
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Rodentia (Rodents)	Caudata (Caudata)
Family	Castoridae (Beavers)	Plethodontidae
Genus	Castor (Beavers)	Thorius
Species	Castor fiber	Thorius smithi

Evolutionary Relationship

Eurasian beaver and Smith's Thorius share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Eurasian beaver

VU — Vulnerable

Smith's Thorius

CR — Critically Endangered

Physical Characteristics

Attribute	Eurasian beaver	Smith's Thorius
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Smith's Thorius

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

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

Eurasian beaver

Eurasian beaver (Castor fiber) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.