brown bear vs Gray-footed Spiny-rat

Ursus arctos compared with Proechimys poliopus

Key Differences

• brown bear is Extinct while Gray-footed Spiny-rat is Vulnerable.

Taxonomic Classification

Rank	brown bear	Gray-footed Spiny-rat
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class same	Mammalia (млекопитающие)	Mammalia (млекопитающие)
Order	Carnivora (хищные)	Rodentia (грызуны)
Family	Ursidae (Bears)	Echimyidae
Genus	Ursus (Bears)	Proechimys
Species	Ursus arctos	Proechimys poliopus

Evolutionary Relationship

brown bear and Gray-footed Spiny-rat share a common ancestor at the Class level: Mammalia. (млекопитающие)

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Gray-footed Spiny-rat

VU — Vulnerable

Physical Characteristics

Attribute	brown bear	Gray-footed Spiny-rat
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).

Gray-footed Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela. Currently classified as Vulnerable 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.