Brown Rat vs Delicate Pygmy Rice Rat

Rattus norvegicus compared with Oligoryzomys delicatus

Key Differences

• Brown Rat is Least Concern while Delicate Pygmy Rice Rat is Data Deficient.

Taxonomic Classification

Rank	Brown Rat	Delicate Pygmy Rice Rat
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order same	Rodentia (ネズミ目)	Rodentia (ネズミ目)
Family	Muridae (Mice & Rats)	Cricetidae
Genus	Rattus	Oligoryzomys
Species	Rattus norvegicus	Oligoryzomys delicatus

Evolutionary Relationship

Brown Rat and Delicate Pygmy Rice Rat share a common ancestor at the Order level: Rodentia. (ネズミ目)

Conservation Status

Brown Rat

LC — Least Concern

Delicate Pygmy Rice Rat

DD — Data Deficient

Physical Characteristics

Attribute	Brown Rat	Delicate Pygmy Rice Rat
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).

Delicate Pygmy Rice Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.

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 2 countries:

🇨🇴 Colombia 🇪🇨 Ecuador