Eurasian beaver vs Ontong Java Flying Fox

Castor fiber compared with Pteropus howensis

Key Differences

• Eurasian beaver is Vulnerable while Ontong Java Flying Fox is Critically Endangered.

Taxonomic Classification

Rank	Eurasian beaver	Ontong Java Flying Fox
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order	Rodentia (啮齿目)	Chiroptera (翼手目)
Family	Castoridae (Beavers)	Pteropodidae (Fruit Bats)
Genus	Castor (Beavers)	Pteropus (Flying Foxes)
Species	Castor fiber	Pteropus howensis

Evolutionary Relationship

Eurasian beaver and Ontong Java Flying Fox share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

Eurasian beaver

VU — Vulnerable

Ontong Java Flying Fox

CR — Critically Endangered

Physical Characteristics

Attribute	Eurasian beaver	Ontong Java Flying Fox
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.

Ontong Java Flying Fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Eurasian beaver

欧亚河狸（Castor fiber）在IUCN红色名录中被列为易危（VU）。面临野外高度濒危风险，种群数量下降，栖息地压力日益增大。