Eurasian beaver vs Long-tailed Ground Squirrel

Castor fiber compared with Urocitellus undulatus

Key Differences

• Eurasian beaver is Vulnerable while Long-tailed Ground Squirrel is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Long-tailed Ground Squirrel
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)	Sciuridae (Squirrels)
Genus	Castor (Beavers)	Urocitellus
Species	Castor fiber	Urocitellus undulatus

Evolutionary Relationship

Eurasian beaver and Long-tailed Ground Squirrel share a common ancestor at the Order level: Rodentia. (Rodents)

Conservation Status

Eurasian beaver

VU — Vulnerable

Long-tailed Ground Squirrel

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Long-tailed Ground Squirrel
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.

Long-tailed Ground Squirrel

Habitat

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.