Amazonian Marsh Rat vs least weasel

Holochilus sciureus compared with Mustela nivalis

Key Differences

Amazonian Marsh Rat is Least Concern while least weasel is Near Threatened.

Taxonomic Classification

Rank	Amazonian Marsh Rat	least weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Carnivora (Carnivorans)
Family	Cricetidae	Mustelidae (Weasels & Otters)
Genus	Holochilus	Mustela
Species	Holochilus sciureus	Mustela nivalis

Evolutionary Relationship

Amazonian Marsh Rat and least weasel share a common ancestor at the Class level: Mammalia. (Mammals)

View Class: Mammalia

Conservation Status

Amazonian Marsh Rat

LC — Least Concern

least weasel

NT — Near Threatened

Physical Characteristics

Attribute	Amazonian Marsh Rat	least weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazonian Marsh Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

least weasel

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 4 distinct biome types spanning the Australasia and Oceanian and Palearctic realms.

Range

Widely distributed across Africa (Sao Tome and Principe), Asia (Cyprus), Europe (11 countries), and Oceania and the Pacific (New Zealand). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Amazonian Marsh Rat

The Amazonian Marsh Rat (Holochilus sciureus) is a species in the genus Holochilus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

least weasel

least weasel (Mustela nivalis) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.