Amazonian Marsh Rat vs Eurasian beaver

Holochilus sciureus compared with Castor fiber

Key Differences

• Amazonian Marsh Rat is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Amazonian Marsh Rat	Eurasian beaver
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	Cricetidae	Castoridae (Beavers)
Genus	Holochilus	Castor (Beavers)
Species	Holochilus sciureus	Castor fiber

Evolutionary Relationship

Amazonian Marsh Rat and Eurasian beaver share a common ancestor at the Order level: Rodentia. (Rodents)

Conservation Status

Amazonian Marsh Rat

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Amazonian Marsh Rat	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazonian Marsh Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

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.

Amazonian Marsh Rat

The Amazonian Marsh Rat (Holochilus sciureus) is a species in the genus Holochilus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.