Brown Rat vs Ripgut brome

Rattus norvegicus compared with Bromus diandrus

Key Differences

• Brown Rat is Least Concern while Ripgut brome is Near Threatened.

Taxonomic Classification

Rank	Brown Rat	Ripgut brome
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Liliopsida (Monocots)
Order	Rodentia (Rodents)	Poales (Grasses)
Family	Muridae (Mice & Rats)	Poaceae (Grass Family)
Genus	Rattus	Bromus
Species	Rattus norvegicus	Bromus diandrus

Conservation Status

Brown Rat

LC — Least Concern

Ripgut brome

NT — Near Threatened

Physical Characteristics

Attribute	Brown Rat	Ripgut brome
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).

Ripgut brome

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 4 distinct biome types spanning the Australasia and Afrotropic realms.

Range

Widely distributed across Africa (Namibia, South Africa, Zimbabwe), Asia (India, Taiwan, Timor-Leste), Europe (13 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Chile, Ecuador). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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 22 countries:

🇦🇺 Australia 🇦🇹 Austria 🇧🇾 Belarus 🇧🇪 Belgium 🇨🇦 Canada 🇨🇱 Chile 🇪🇨 Ecuador 🇫🇷 France 🇮🇪 Ireland 🇱🇹 Lithuania 🇲🇽 Mexico 🇳🇦 Namibia 🇳🇱 Netherlands 🇳🇴 Norway 🇵🇹 Portugal 🇿🇦 South Africa 🇪🇸 Spain 🇨🇭 Switzerland 🇹🇼 Taiwan 🇺🇦 Ukraine 🇬🇧 United Kingdom 🇺🇸 United States