Brown Rat vs Thread Weed

Rattus norvegicus compared with Ulva compressa

Taxonomic Classification

Rank	Brown Rat	Thread Weed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Chlorophyta (Chlorophyta)
Class	Mammalia (Mammals)	Ulvophyceae (Ulvophyceae)
Order	Rodentia (Rodents)	Ulvales (Ulvales)
Family	Muridae (Mice & Rats)	Ulvaceae
Genus	Rattus	Ulva
Species	Rattus norvegicus	Ulva compressa

Conservation Status

Brown Rat

LC — Least Concern

Thread Weed

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	Thread 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).

Thread Weed

Habitat

Native to Asia and Europe and Oceania, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), Oceania and the Pacific (New Zealand), 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.

Shared Countries

Both species can be found in 7 countries:

🇧🇷 Brazil 🇩🇰 Denmark 🇳🇿 New Zealand 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇹🇼 Taiwan