Brown Rat vs Grey Willow

Rattus norvegicus compared with Salix atrocinerea

Key Differences

• Brown Rat is Least Concern while Grey Willow is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	Grey Willow
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Rodentia (Rodents)	Malpighiales (Malpighiales)
Family	Muridae (Mice & Rats)	Salicaceae
Genus	Rattus	Salix
Species	Rattus norvegicus	Salix atrocinerea

Conservation Status

Brown Rat

LC — Least Concern

Grey Willow

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	Grey Willow
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).

Grey Willow

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Canada, Norway, Portugal, Sweden, and United States.

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.

Shared Countries

Both species can be found in 5 countries:

🇨🇦 Canada 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇺🇸 United States