Eurasian beaver vs Triangulate Bud Spider

Castor fiber compared with Steatoda triangulosa

Key Differences

• Eurasian beaver is Vulnerable while Triangulate Bud Spider is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Triangulate Bud Spider
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Arachnida (Arachnids)
Order	Rodentia (Rodents)	Araneae (Araneae)
Family	Castoridae (Beavers)	Theridiidae
Genus	Castor (Beavers)	Steatoda
Species	Castor fiber	Steatoda triangulosa

Evolutionary Relationship

Eurasian beaver and Triangulate Bud Spider share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Triangulate Bud Spider

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Triangulate Bud Spider
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.

Triangulate Bud Spider

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Found across Europe (28 countries) and North America (Canada, United States).

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 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇷🇺 Russia 🇸🇪 Sweden