Allen's Big-eared Bat vs brown bear

Idionycteris phyllotis compared with Ursus arctos

Key Differences

• Allen's Big-eared Bat is Least Concern while brown bear is Extinct.

Taxonomic Classification

Rank	Allen's Big-eared Bat	brown bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Chiroptera (Bats)	Carnivora (Carnivorans)
Family	Vespertilionidae	Ursidae (Bears)
Genus	Idionycteris	Ursus (Bears)
Species	Idionycteris phyllotis	Ursus arctos

Evolutionary Relationship

Allen's Big-eared Bat and brown bear share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Allen's Big-eared Bat

LC — Least Concern

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Physical Characteristics

Attribute	Allen's Big-eared Bat	brown bear
Diet	—	Omnivore
Average Lifespan	—	25 years
Average Length	—	2.0 m
Average Weight	—	300.0 kg

Habitat & Geographic Range

Allen's Big-eared Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

Allen's Big-eared Bat

The Allen's Big-eared Bat (Idionycteris phyllotis) is a species in the genus Idionycteris. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.