Brown Rat vs Double-crested Cormorant

Rattus norvegicus compared with Phalacrocorax auritus

Taxonomic Classification

Rank	Brown Rat	Double-crested Cormorant
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Suliformes (Suliformes)
Family	Muridae (Mice & Rats)	Phalacrocoracidae
Genus	Rattus	Phalacrocorax
Species	Rattus norvegicus	Phalacrocorax auritus

Evolutionary Relationship

Brown Rat and Double-crested Cormorant share a common ancestor at the Phylum level: Chordata. (Chordates)

View Phylum: Chordata

Conservation Status

Brown Rat

LC — Least Concern

Double-crested Cormorant

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	Double-crested Cormorant
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).

Double-crested Cormorant

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Europe (5 countries), North America (United States), and South America (Colombia).

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.

Double-crested Cormorant

Double-crested Cormorant (Phalacrocorax auritus) 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.