Eurasian beaver vs Napo Spiny-rat

Castor fiber compared with Proechimys quadruplicatus

Key Differences

• Eurasian beaver is Vulnerable while Napo Spiny-rat is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Napo Spiny-rat
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class same	Mammalia (млекопитающие)	Mammalia (млекопитающие)
Order same	Rodentia (грызуны)	Rodentia (грызуны)
Family	Castoridae (Beavers)	Echimyidae
Genus	Castor (Beavers)	Proechimys
Species	Castor fiber	Proechimys quadruplicatus

Evolutionary Relationship

Eurasian beaver and Napo Spiny-rat share a common ancestor at the Order level: Rodentia. (грызуны)

Conservation Status

Eurasian beaver

VU — Vulnerable

Napo Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Napo Spiny-rat
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.

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

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.