brown bear vs Lesser Noctule

Ursus arctos compared with Nyctalus leisleri

Key Differences

• brown bear is Extinct while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	brown bear	Lesser Noctule
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mamalia)	Mammalia (mamalia)
Order	Carnivora (Carnivorans)	Chiroptera (Kelelawar)
Family	Ursidae (Bears)	Vespertilionidae
Genus	Ursus (Bears)	Nyctalus
Species	Ursus arctos	Nyctalus leisleri

Evolutionary Relationship

brown bear and Lesser Noctule share a common ancestor at the Class level: Mammalia. (mamalia)

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	brown bear	Lesser Noctule
Diet	Omnivore	—
Average Lifespan	25 years	—
Average Length	2.0 m	—
Average Weight	300.0 kg	—

Habitat & Geographic Range

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

brown bear

The world's most widely distributed bear species, brown bears range from North America and Europe across Russia to Japan, occupying forests, tundra, and alpine meadows. Adults can weigh up to 700 kg in coastal Alaskan populations. Omnivores that consume berries, roots, fish, and carrion, brown bears are a keystone species that distribute nutrients across landscapes. Most populations are stable, though some subspecies are threatened.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇸🇪 Sweden 🇺🇦 Ukraine