Brown Rat vs 无蹼齿蟾

Rattus norvegicus compared with Oreolalax schmidti

Key Differences

• Brown Rat is Least Concern while 无蹼齿蟾 is Near Threatened.

Taxonomic Classification

Rank	Brown Rat	无蹼齿蟾
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Amphibia (两栖动物)
Order	Rodentia (啮齿目)	Anura (无尾目)
Family	Muridae (Mice & Rats)	Megophryidae
Genus	Rattus	Oreolalax
Species	Rattus norvegicus	Oreolalax schmidti

Evolutionary Relationship

Brown Rat and 无蹼齿蟾 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Brown Rat

LC — Least Concern

无蹼齿蟾

NT — Near Threatened

Physical Characteristics

Attribute	Brown Rat	无蹼齿蟾
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).

无蹼齿蟾

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Brown Rat

褐家鼠（Rattus norvegicus）在IUCN红色名录中被列为无危（LC）。其分布广泛，种群数量稳定，无紧迫保护关切。