Amerikanischer Biber vs Fransenfledermaus

Castor canadensis compared with Myotis nattereri

Key Differences

• Amerikanischer Biber is Not Evaluated while Fransenfledermaus is Critically Endangered.

Taxonomic Classification

Rank	Amerikanischer Biber	Fransenfledermaus
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Mammalia (Säugetiere)	Mammalia (Säugetiere)
Order	Rodentia (Nagetiere)	Chiroptera (Fledertiere)
Family	Castoridae (Beavers)	Vespertilionidae
Genus	Castor (Beavers)	Myotis
Species	Castor canadensis	Myotis nattereri

Evolutionary Relationship

Amerikanischer Biber and Fransenfledermaus share a common ancestor at the Class level: Mammalia. (Säugetiere)

Conservation Status

Amerikanischer Biber

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Fransenfledermaus

CR — Critically Endangered

Physical Characteristics

Attribute	Amerikanischer Biber	Fransenfledermaus
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	1.0 m	—
Average Weight	25.0 kg	—

Habitat & Geographic Range

Amerikanischer Biber

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

Fransenfledermaus

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (6 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Amerikanischer Biber

The largest rodent in North America, Canadian beavers weigh up to 32 kg and are master ecosystem engineers inhabiting rivers, lakes, and wetlands across Canada and the northern United States. By felling trees and constructing dams up to hundreds of meters long, beavers create ponds that provide habitat for hundreds of species. Their lodges and canals transform entire watersheds. Once nearly hunted to extinction for their fur, beaver populations have recovered strongly.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇱🇺 Luxembourg 🇳🇴 Norway 🇸🇪 Sweden 🇺🇦 Ukraine