Eurasian beaver vs Miller’s Mastiff Bat

Castor fiber compared with Molossus pretiosus

Key Differences

• Eurasian beaver is Vulnerable while Miller’s Mastiff Bat is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Miller’s Mastiff Bat
Kingdom same	Animalia (प्राणी)	Animalia (प्राणी)
Phylum same	Chordata (रज्जुकी)	Chordata (रज्जुकी)
Class same	Mammalia (स्तनधारी)	Mammalia (स्तनधारी)
Order	Rodentia (कृंतक)	Chiroptera (चमगादड़)
Family	Castoridae (Beavers)	Molossidae
Genus	Castor (Beavers)	Molossus
Species	Castor fiber	Molossus pretiosus

Evolutionary Relationship

Eurasian beaver and Miller’s Mastiff Bat share a common ancestor at the Class level: Mammalia. (स्तनधारी)

Conservation Status

Eurasian beaver

VU — Vulnerable

Miller’s Mastiff Bat

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Miller’s Mastiff Bat
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.

Miller’s Mastiff Bat

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.