Brown Rat vs Transparent tunicate

Rattus norvegicus compared with Ciona savignyi

Taxonomic Classification

Rank	Brown Rat	Transparent tunicate
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Ascidiacea (Ascidiacea)
Order	Rodentia (Rodents)	Phlebobranchia
Family	Muridae (Mice & Rats)	Cionidae
Genus	Rattus	Ciona
Species	Rattus norvegicus	Ciona savignyi

Evolutionary Relationship

Brown Rat and Transparent tunicate share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Brown Rat

LC — Least Concern

Transparent tunicate

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	Transparent tunicate
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).

Transparent tunicate

Habitat

Native to Europe and North America and Oceania, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Europe (Norway, Russia), North America (Canada, United States), Oceania and the Pacific (New Zealand), and South America (Argentina).

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 6 countries:

🇦🇷 Argentina 🇨🇦 Canada 🇳🇿 New Zealand 🇳🇴 Norway 🇷🇺 Russia 🇺🇸 United States