Brown Rat vs Smith's Brome

Rattus norvegicus compared with Bromus pseudosecalinus

Key Differences

• Brown Rat is Least Concern while Smith's Brome is Critically Endangered.

Taxonomic Classification

Rank	Brown Rat	Smith's Brome
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Mammalia (哺乳類)	Liliopsida (単子葉植物綱)
Order	Rodentia (ネズミ目)	Poales (イネ目)
Family	Muridae (Mice & Rats)	Poaceae (Grass Family)
Genus	Rattus	Bromus
Species	Rattus norvegicus	Bromus pseudosecalinus

Conservation Status

Brown Rat

LC — Least Concern

Smith's Brome

CR — Critically Endangered

Physical Characteristics

Attribute	Brown Rat	Smith's 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).

Smith's Brome

Habitat

Inhabits temperate broadleaf and mixed forests and temperate coniferous forests within the Palearctic biogeographic realm.

Range

Found across Europe (8 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brown Rat

ドブネズミ（Rattus norvegicus）はIUCNレッドリストで軽度懸念（LC）に分類されています。分布域全体に広く生息し個体数は安定しており、緊急の保護上の懸念はありません。

Shared Countries

Both species can be found in 8 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇫🇷 France 🇮🇪 Ireland 🇳🇱 Netherlands 🇳🇴 Norway 🇸🇪 Sweden 🇬🇧 United Kingdom