Brown Rat vs Nurse hound

Rattus norvegicus compared with Scyliorhinus cervigoni

Key Differences

• Brown Rat is Least Concern while Nurse hound is Data Deficient.

Taxonomic Classification

Rank	Brown Rat	Nurse hound
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	Scyliorhinus
Species	Rattus norvegicus	Scyliorhinus cervigoni

Evolutionary Relationship

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

Conservation Status

Brown Rat

LC — Least Concern

Nurse hound

DD — Data Deficient

Physical Characteristics

Attribute	Brown Rat	Nurse hound
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).

Nurse hound

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.