Eurasian beaver vs Fierce Orbweaver

Castor fiber compared with Araneus saevus

Key Differences

• Eurasian beaver is Vulnerable while Fierce Orbweaver is Near Threatened.

Taxonomic Classification

Rank	Eurasian beaver	Fierce Orbweaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Arachnida (Arachnids)
Order	Rodentia (Rodents)	Araneae (Araneae)
Family	Castoridae (Beavers)	Araneidae
Genus	Castor (Beavers)	Araneus
Species	Castor fiber	Araneus saevus

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Fierce Orbweaver

NT — Near Threatened

Physical Characteristics

Attribute	Eurasian beaver	Fierce Orbweaver
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.

Fierce Orbweaver

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Distributed across Canada, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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:

🇳🇴 Norway 🇸🇪 Sweden