Eurasian beaver vs Guaira Spiny-rat

Castor fiber compared with Proechimys guairae

Key Differences

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

Taxonomic Classification

Rank	Eurasian beaver	Guaira Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Rodentia (Rodents)	Rodentia (Rodents)
Family	Castoridae (Beavers)	Echimyidae
Genus	Castor (Beavers)	Proechimys
Species	Castor fiber	Proechimys guairae

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Guaira Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Guaira 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.

Guaira Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia 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.