Brown Rat vs Far Eastern Brook Lamprey

Rattus norvegicus compared with Lethenteron reissneri

Taxonomic Classification

Rank	Brown Rat	Far Eastern Brook Lamprey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Petromyzonti (Petromyzonti)
Order	Rodentia (Rodents)	Petromyzontiformes (lamprey)
Family	Muridae (Mice & Rats)	Petromyzontidae
Genus	Rattus	Lethenteron
Species	Rattus norvegicus	Lethenteron reissneri

Evolutionary Relationship

Brown Rat and Far Eastern Brook Lamprey share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Rat

LC — Least Concern

Far Eastern Brook Lamprey

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	Far Eastern Brook Lamprey
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).

Far Eastern Brook Lamprey

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.