American Wormseed vs Brown Rat

Dysphania ambrosioides compared with Rattus norvegicus

Key Differences

• American Wormseed is Not Evaluated while Brown Rat is Least Concern.

Taxonomic Classification

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

Conservation Status

American Wormseed

NE — Not Evaluated

Brown Rat

LC — Least Concern

Physical Characteristics

Attribute	American Wormseed	Brown Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American Wormseed

Habitat

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

Range

Widely distributed across Africa (11 countries), Asia (11 countries), Europe (18 countries), North America (14 countries), Oceania and the Pacific (Fiji), and South America (7 countries).

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).

American Wormseed

The American Wormseed (Dysphania ambrosioides) is a species in the genus Dysphania. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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 42 countries:

🇦🇱 Albania 🇦🇬 Antigua and Barbuda 🇦🇹 Austria 🇧🇸 Bahamas 🇧🇧 Barbados 🇧🇪 Belgium 🇧🇦 Bosnia and Herzegovina 🇧🇷 Brazil 🇨🇦 Canada 🇨🇱 Chile 🇨🇴 Colombia 🇨🇿 Czech Republic 🇩🇰 Denmark 🇩🇲 Dominica 🇪🇨 Ecuador 🇫🇯 Fiji 🇫🇷 France 🇬🇷 Greece 🇬🇩 Grenada 🇬🇾 Guyana 🇮🇹 Italy 🇯🇲 Jamaica 🇯🇵 Japan 🇱🇸 Lesotho 🇲🇺 Mauritius 🇲🇩 Moldova 🇳🇦 Namibia 🇲🇰 North Macedonia 🇳🇴 Norway 🇵🇹 Portugal 🇰🇳 Saint Kitts and Nevis 🇻🇨 Saint Vincent and the Grenadines 🇸🇦 Saudi Arabia 🇷🇸 Serbia 🇸🇮 Slovenia 🇿🇦 South Africa 🇪🇸 Spain 🇸🇪 Sweden 🇨🇭 Switzerland 🇹🇼 Taiwan 🇺🇸 United States 🇻🇪 Venezuela