Brown Rat vs Dusky catshark

Rattus norvegicus compared with Bythaelurus incanus

Key Differences

• Brown Rat is Least Concern while Dusky catshark is Data Deficient.

Taxonomic Classification

Rank	Brown Rat	Dusky catshark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Rodentia (Rodents)	Carcharhiniformes (Ground Sharks)
Family	Muridae (Mice & Rats)	Scyliorhinidae
Genus	Rattus	Bythaelurus
Species	Rattus norvegicus	Bythaelurus incanus

Evolutionary Relationship

Brown Rat and Dusky catshark share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Rat

LC — Least Concern

Dusky catshark

DD — Data Deficient

Physical Characteristics

Attribute	Brown Rat	Dusky catshark
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).

Dusky catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

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.