Brown Rat vs Gray Dwarf Hamster

Rattus norvegicus compared with Cricetulus migratorius

Taxonomic Classification

Rank	Brown Rat	Gray Dwarf Hamster
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	Cricetulus
Species	Rattus norvegicus	Cricetulus migratorius

Evolutionary Relationship

Brown Rat and Gray Dwarf Hamster share a common ancestor at the Order level: Rodentia. (ネズミ目)

Conservation Status

Brown Rat

LC — Least Concern

Gray Dwarf Hamster

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	Gray Dwarf Hamster
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).

Gray Dwarf Hamster

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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。