Eurasian beaver vs Small Dog Whelk

Castor fiber compared with Tritia varicosa

Key Differences

• Eurasian beaver is Vulnerable while Small Dog Whelk is Not Evaluated.

Taxonomic Classification

Rank	Eurasian beaver	Small Dog Whelk
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Rodentia (Rodents)	Neogastropoda (Neogastropoda)
Family	Castoridae (Beavers)	Nassariidae
Genus	Castor (Beavers)	Tritia
Species	Castor fiber	Tritia varicosa

Evolutionary Relationship

Eurasian beaver and Small Dog Whelk share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Small Dog Whelk

NE — Not Evaluated

Physical Characteristics

Attribute	Eurasian beaver	Small Dog Whelk
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.

Small Dog Whelk

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Denmark and Norway.

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.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇳🇴 Norway