Europäische Biber vs Ray's Knotgrass

Castor fiber compared with Polygonum oxyspermum

Key Differences

• Europäische Biber is Vulnerable while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Europäische Biber	Ray's Knotgrass
Kingdom	Animalia (Tier)	Plantae (Pflanzen)
Phylum	Chordata (Chordatiere)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Säugetiere)	Magnoliopsida (Dicots)
Order	Rodentia (Nagetiere)	Caryophyllales (Nelkenartige)
Family	Castoridae (Beavers)	Polygonaceae
Genus	Castor (Beavers)	Polygonum
Species	Castor fiber	Polygonum oxyspermum

Conservation Status

Europäische Biber

VU — Vulnerable

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Europäische Biber	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Europäische Biber

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.

Ray's Knotgrass

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Europäische Biber

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