Brown Rat vs Poison Ivy Rust

Rattus norvegicus compared with Pileolaria brevipes

Key Differences

• Brown Rat is Least Concern while Poison Ivy Rust is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	Poison Ivy Rust
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Annelida (Segmented Worms)
Class	Mammalia (Mammals)	Polychaeta (Polychaeta)
Order	Rodentia (Rodents)	Sabellida (Sabellida)
Family	Muridae (Mice & Rats)	Serpulidae
Genus	Rattus	Pileolaria
Species	Rattus norvegicus	Pileolaria brevipes

Evolutionary Relationship

Brown Rat and Poison Ivy Rust share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brown Rat

LC — Least Concern

Poison Ivy Rust

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	Poison Ivy Rust
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).

Poison Ivy Rust

Habitat

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

Range

Distributed across 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 2 countries:

🇹🇼 Taiwan 🇺🇸 United States