Eurasian beaver vs Knopper Gall

Castor fiber compared with Andricus quercuscalicis

Key Differences

• Eurasian beaver is Vulnerable while Knopper Gall is Not Evaluated.

Taxonomic Classification

Rank	Eurasian beaver	Knopper Gall
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Rodentia (Rodents)	Hymenoptera (Ants, Bees & Wasps)
Family	Castoridae (Beavers)	Cynipidae
Genus	Castor (Beavers)	Andricus
Species	Castor fiber	Andricus quercuscalicis

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Knopper Gall

NE — Not Evaluated

Physical Characteristics

Attribute	Eurasian beaver	Knopper Gall
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.

Knopper Gall

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (7 countries).

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:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden