Brown Rat vs greater grison

Rattus norvegicus compared with Galictis vittata

Taxonomic Classification

Rank	Brown Rat	greater grison
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Carnivora (Carnivorans)
Family	Muridae (Mice & Rats)	Mustelidae (Weasels & Otters)
Genus	Rattus	Galictis
Species	Rattus norvegicus	Galictis vittata

Evolutionary Relationship

Brown Rat and greater grison share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Brown Rat

LC — Least Concern

greater grison

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	greater grison
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

greater grison

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Brown Rat

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇻🇪 Venezuela