Brown smooth hound vs Eurasian beaver

Mustelus henlei compared with Castor fiber

Key Differences

• Brown smooth hound is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

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

Evolutionary Relationship

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

Conservation Status

Brown smooth hound

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Brown smooth hound	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown smooth hound

Habitat

Typically found in marine environments from coastal waters to deep ocean.

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.

Brown smooth hound

The Brown Smooth Hound (Mustelus henlei) is a species in the genus Mustelus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

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.