Brown Rat vs Common Orache

Rattus norvegicus compared with Atriplex patula

Taxonomic Classification

Rank	Brown Rat	Common Orache
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Rodentia (Rodents)	Caryophyllales (Caryophyllales)
Family	Muridae (Mice & Rats)	Amaranthaceae
Genus	Rattus	Atriplex
Species	Rattus norvegicus	Atriplex patula

Conservation Status

Brown Rat

LC — Least Concern

Common Orache

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	Common Orache
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).

Common Orache

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Asia (Georgia), Europe (13 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Chile).

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.

Common Orache

<em>Atriplex patula</em> is an annual herb in the family Amaranthaceae, distributed across Europe, Asia, North America, Australia, and Chile. It typically colonizes disturbed habitats, coastal areas, salt marshes, roadsides, agricultural fields, and waste ground, tolerating saline soils that many other species cannot withstand. The species is halophytic, possessing physiological adaptations for salt tolerance, including salt-excreting glands on its leaves. Its range extends across Georgia in Asia, thirteen European countries, and introduced populations in North America, Australia, and South America. Orache produces small, inconspicuous flowers and characteristic mealy-textured leaves. It is sometimes used as a leafy vegetable in traditional cuisine across parts of its native range. The IUCN lists this species as Least Concern given its widespread occurrence and adaptability to multiple habitat types. Biological traits including average lifespan, body measurements, and detailed dietary ecology remain poorly documented in standardized databases for this weedy annual species. <em>Atriplex patula</em> plays a functional role in stabilizing disturbed soils and contributing to coastal and ruderal plant communities across its broad distribution.