Brown Rat vs eccentric grass snail

Rattus norvegicus compared with Vallonia excentrica

Key Differences

• Brown Rat is Least Concern while eccentric grass snail is Near Threatened.

Taxonomic Classification

Rank	Brown Rat	eccentric grass snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Rodentia (Rodents)	Stylommatophora (Stylommatophora)
Family	Muridae (Mice & Rats)	Valloniidae
Genus	Rattus	Vallonia
Species	Rattus norvegicus	Vallonia excentrica

Evolutionary Relationship

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

Conservation Status

Brown Rat

LC — Least Concern

eccentric grass snail

NT — Near Threatened

Physical Characteristics

Attribute	Brown Rat	eccentric grass snail
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).

eccentric grass snail

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 5 distinct biome types spanning the Australasia and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Israel), Europe (9 countries), North America (Mexico, United States), and Oceania and the Pacific (New Zealand). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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 13 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇫🇮 Finland 🇫🇷 France 🇬🇷 Greece 🇮🇱 Israel 🇮🇹 Italy 🇲🇽 Mexico 🇳🇿 New Zealand 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇺🇸 United States