Brown Rat vs

Rattus norvegicus compared with Leucocoprinus cretaceus

Key Differences

Brown Rat is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Mammalia (Mammals)	Agaricomycetes (Mushrooms)
Order	Rodentia (Rodents)	Agaricales (Gilled Mushrooms)
Family	Muridae (Mice & Rats)	Agaricaceae (Agarics)
Genus	Rattus	Leucocoprinus
Species	Rattus norvegicus	Leucocoprinus cretaceus

Conservation Status

Brown Rat

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat
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).

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Found across Europe (6 countries) and South America (Brazil).

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.

Leucocoprinus cretaceus is a small, chalk-white mushroom with a mealy or powdery cap surface distinctive within its genus. It grows in potted plants, greenhouses, and subtropical to tropical soils, often appearing in compost-rich indoor plantings. This saprotrophic fungus decomposes organic matter in enriched soils and is frequently encountered in tropical glasshouse environments.