Brown Rat vs Devil weed

Rattus norvegicus compared with Sargassum horneri

Key Differences

• Brown Rat is Least Concern while Devil weed is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	Devil weed
Kingdom	Animalia (Animals)	Chromista (Chromista)
Phylum	Chordata (Chordates)	Ochrophyta (Ochrophyta)
Class	Mammalia (Mammals)	Phaeophyceae (Phaeophyceae)
Order	Rodentia (Rodents)	Fucales (Fucales)
Family	Muridae (Mice & Rats)	Sargassaceae
Genus	Rattus	Sargassum
Species	Rattus norvegicus	Sargassum horneri

Conservation Status

Brown Rat

LC — Least Concern

Devil weed

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	Devil weed
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).

Devil weed

Habitat

Native to Asia and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Mexico, Taiwan, 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 3 countries:

🇲🇽 Mexico 🇹🇼 Taiwan 🇺🇸 United States