Brown Rat vs Pygmy three-toed sloth

Rattus norvegicus compared with Bradypus pygmaeus

Key Differences

• Brown Rat is Least Concern while Pygmy three-toed sloth is Critically Endangered.

Taxonomic Classification

Rank	Brown Rat	Pygmy three-toed sloth
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	Rodentia (ネズミ目)	Pilosa (有毛目)
Family	Muridae (Mice & Rats)	Bradypodidae (Three-toed Sloths)
Genus	Rattus	Bradypus (Three-toed Sloths)
Species	Rattus norvegicus	Bradypus pygmaeus

Evolutionary Relationship

Brown Rat and Pygmy three-toed sloth share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Brown Rat

LC — Least Concern

Pygmy three-toed sloth

CR — Critically Endangered

Physical Characteristics

Attribute	Brown Rat	Pygmy three-toed sloth
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).

Pygmy three-toed sloth

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。