Brown Rat vs intermediate oak fern

Rattus norvegicus compared with Gymnocarpium intermedium

Key Differences

• Brown Rat is Least Concern while intermediate oak fern is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	intermediate oak fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Mammalia (Mammals)	Polypodiopsida (Polypodiopsida)
Order	Rodentia (Rodents)	Polypodiales (Polypodiales)
Family	Muridae (Mice & Rats)	Cystopteridaceae
Genus	Rattus	Gymnocarpium
Species	Rattus norvegicus	Gymnocarpium intermedium

Conservation Status

Brown Rat

LC — Least Concern

intermediate oak fern

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	intermediate oak fern
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).

intermediate oak fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Canada and Norway.

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:

🇨🇦 Canada 🇳🇴 Norway