brown bear vs Desmarest’s Spiny Pocket Mouse

Ursus arctos compared with Heteromys desmarestianus

Key Differences

• brown bear is Extinct while Desmarest’s Spiny Pocket Mouse is Least Concern.

Taxonomic Classification

Rank	brown bear	Desmarest’s Spiny Pocket Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Carnivora (Carnivorans)	Rodentia (Rodents)
Family	Ursidae (Bears)	Heteromyidae
Genus	Ursus (Bears)	Heteromys
Species	Ursus arctos	Heteromys desmarestianus

Evolutionary Relationship

brown bear and Desmarest’s Spiny Pocket Mouse share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Desmarest’s Spiny Pocket Mouse

LC — Least Concern

Physical Characteristics

Attribute	brown bear	Desmarest’s Spiny Pocket Mouse
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).

Desmarest’s Spiny Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

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.