Brown Rat vs Pseudoscorpion

Rattus norvegicus compared with Ephippiochthonius tetrachelatus

Key Differences

• Brown Rat is Least Concern while Pseudoscorpion is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	Pseudoscorpion
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Arachnida (Arachnids)
Order	Rodentia (Rodents)	Pseudoscorpiones
Family	Muridae (Mice & Rats)	Chthoniidae
Genus	Rattus	Ephippiochthonius
Species	Rattus norvegicus	Ephippiochthonius tetrachelatus

Evolutionary Relationship

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

Conservation Status

Brown Rat

LC — Least Concern

Pseudoscorpion

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	Pseudoscorpion
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).

Pseudoscorpion

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Distributed across Denmark 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:

🇩🇰 Denmark 🇺🇸 United States