Eurasian beaver vs teat sponge

Castor fiber compared with Polymastia mamillaris

Key Differences

• Eurasian beaver is Vulnerable while teat sponge is Not Evaluated.

Taxonomic Classification

Rank	Eurasian beaver	teat sponge
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Porifera (Sponges)
Class	Mammalia (Mammals)	Demospongiae (Demospongiae)
Order	Rodentia (Rodents)	Polymastiida (Polymastiida)
Family	Castoridae (Beavers)	Polymastiidae
Genus	Castor (Beavers)	Polymastia
Species	Castor fiber	Polymastia mamillaris

Evolutionary Relationship

Eurasian beaver and teat sponge share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Eurasian beaver

VU — Vulnerable

teat sponge

NE — Not Evaluated

Physical Characteristics

Attribute	Eurasian beaver	teat sponge
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.

teat sponge

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

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 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden