Dwarf round ray vs Eurasian beaver

Urotrygon nana compared with Castor fiber

Key Differences

• Dwarf round ray is Near Threatened while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Dwarf round ray	Eurasian beaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Rodentia (Rodents)
Family	Urotrygonidae	Castoridae (Beavers)
Genus	Urotrygon	Castor (Beavers)
Species	Urotrygon nana	Castor fiber

Evolutionary Relationship

Dwarf round ray and Eurasian beaver share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Dwarf round ray	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

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.

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.