Brown Rat vs Montevideo Redbelly Toad

Rattus norvegicus compared with Melanophryniscus montevidensis

Key Differences

• Brown Rat is Least Concern while Montevideo Redbelly Toad is Vulnerable.

Taxonomic Classification

Rank	Brown Rat	Montevideo Redbelly Toad
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Rodentia (Rodents)	Anura (Frogs & Toads)
Family	Muridae (Mice & Rats)	Bufonidae
Genus	Rattus	Melanophryniscus
Species	Rattus norvegicus	Melanophryniscus montevidensis

Evolutionary Relationship

Brown Rat and Montevideo Redbelly Toad share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Rat

LC — Least Concern

Montevideo Redbelly Toad

VU — Vulnerable

Physical Characteristics

Attribute	Brown Rat	Montevideo Redbelly Toad
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).

Montevideo Redbelly Toad

Habitat

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

Brown Rat

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.