Eurasian beaver vs Far Eastern Brook Lamprey

Castor fiber compared with Lethenteron reissneri

Key Differences

• Eurasian beaver is Vulnerable while Far Eastern Brook Lamprey is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Far Eastern Brook Lamprey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Petromyzonti (Petromyzonti)
Order	Rodentia (Rodents)	Petromyzontiformes (lamprey)
Family	Castoridae (Beavers)	Petromyzontidae
Genus	Castor (Beavers)	Lethenteron
Species	Castor fiber	Lethenteron reissneri

Evolutionary Relationship

Eurasian beaver and Far Eastern Brook Lamprey share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Eurasian beaver

VU — Vulnerable

Far Eastern Brook Lamprey

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Far Eastern Brook Lamprey
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.

Far Eastern Brook Lamprey

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.