Big-eared opossum vs brown bear

Didelphis aurita compared with Ursus arctos

Key Differences

• Big-eared opossum is Least Concern while brown bear is Extinct.

Taxonomic Classification

Rank	Big-eared opossum	brown bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Didelphimorphia (Didelphimorphia)	Carnivora (Carnivorans)
Family	Didelphidae	Ursidae (Bears)
Genus	Didelphis	Ursus (Bears)
Species	Didelphis aurita	Ursus arctos

Evolutionary Relationship

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

Conservation Status

Big-eared opossum

LC — Least Concern

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Physical Characteristics

Attribute	Big-eared opossum	brown bear
Diet	—	Omnivore
Average Lifespan	—	25 years
Average Length	—	2.0 m
Average Weight	—	300.0 kg

Habitat & Geographic Range

Big-eared opossum

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).

Big-eared opossum

The Big-eared opossum (Didelphis aurita) is a species in the genus Didelphis. 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.