Brown Rat vs Large-Neck Clam

Rattus norvegicus compared with Mya arenaria

Key Differences

• Brown Rat is Least Concern while Large-Neck Clam is Vulnerable.

Taxonomic Classification

Rank	Brown Rat	Large-Neck Clam
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (cordados)	Mollusca (moluscos)
Class	Mammalia (mamíferos)	Bivalvia (Bivalvia)
Order	Rodentia (Rodents)	Myida (Myida)
Family	Muridae (Mice & Rats)	Myidae
Genus	Rattus	Mya
Species	Rattus norvegicus	Mya arenaria

Evolutionary Relationship

Brown Rat and Large-Neck Clam share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brown Rat

LC — Least Concern

Large-Neck Clam

VU — Vulnerable

Physical Characteristics

Attribute	Brown Rat	Large-Neck Clam
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).

Large-Neck Clam

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes, among 5 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Georgia, Turkey), Europe (22 countries), and North America (Canada, United States). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Brown Rat

La rata parda (Rattus norvegicus) está clasificada como Preocupación Menor (LC) en la Lista Roja de la UICN. Ampliamente distribuida y abundante en su área de distribución, con poblaciones estables y sin preocupaciones de conservación inmediatas.

Large-Neck Clam

La almeja de cuello largo (Mya arenaria) está clasificada como Vulnerable (VU) en la Lista Roja de la UICN. Enfrenta un alto riesgo de amenaza en estado silvestre, con poblaciones en declive y creciente presión sobre su hábitat.

Shared Countries

Both species can be found in 24 countries:

🇧🇪 Belgium 🇧🇬 Bulgaria 🇨🇦 Canada 🇩🇰 Denmark 🇪🇪 Estonia 🇫🇷 France 🇩🇪 Germany 🇬🇷 Greece 🇮🇸 Iceland 🇮🇪 Ireland 🇮🇹 Italy 🇱🇻 Latvia 🇱🇹 Lithuania 🇳🇱 Netherlands 🇳🇴 Norway 🇵🇱 Poland 🇵🇹 Portugal 🇷🇴 Romania 🇷🇺 Russia 🇪🇸 Spain 🇸🇪 Sweden 🇺🇦 Ukraine 🇬🇧 United Kingdom 🇺🇸 United States