Bartail spurdog vs Eurasian beaver

Squalus notocaudatus compared with Castor fiber

Key Differences

• Bartail spurdog is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Bartail spurdog	Eurasian beaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Squaliformes (Squaliformes)	Rodentia (Rodents)
Family	Squalidae	Castoridae (Beavers)
Genus	Squalus	Castor (Beavers)
Species	Squalus notocaudatus	Castor fiber

Evolutionary Relationship

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

Conservation Status

Bartail spurdog

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Bartail spurdog	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bartail spurdog

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.

Bartail spurdog

The Bartail spurdog (Squalus notocaudatus) is a species in the genus Squalus. It is currently classified as Least Concern on the IUCN Red List.

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.