Eurasian beaver vs Smooth hound

Castor fiber compared with Mustelus mento

Key Differences

• Eurasian beaver is Vulnerable while Smooth hound is Critically Endangered.

Taxonomic Classification

Rank	Eurasian beaver	Smooth hound
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Rodentia (Rodents)	Carcharhiniformes (Ground Sharks)
Family	Castoridae (Beavers)	Triakidae
Genus	Castor (Beavers)	Mustelus
Species	Castor fiber	Mustelus mento

Evolutionary Relationship

Eurasian beaver and Smooth hound share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Eurasian beaver

VU — Vulnerable

Smooth hound

CR — Critically Endangered

Physical Characteristics

Attribute	Eurasian beaver	Smooth hound
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.

Smooth hound

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

Found in Chile. 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.