Alston s Cotton Rat vs Smooth hound

Sigmodon alstoni compared with Triakis maculata

Key Differences

• Alston s Cotton Rat is Least Concern while Smooth hound is Critically Endangered.

Taxonomic Classification

Rank	Alston s Cotton Rat	Smooth hound
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Chondrichthyes (軟骨魚綱)
Order	Rodentia (ネズミ目)	Carcharhiniformes (メジロザメ目)
Family	Cricetidae	Triakidae
Genus	Sigmodon	Triakis
Species	Sigmodon alstoni	Triakis maculata

Evolutionary Relationship

Alston s Cotton Rat and Smooth hound share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Alston s Cotton Rat

LC — Least Concern

Smooth hound

CR — Critically Endangered

Physical Characteristics

Attribute	Alston s Cotton Rat	Smooth hound
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alston s Cotton Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Smooth hound

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

Found in Chile. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Alston s Cotton Rat

The Alston s Cotton Rat (Sigmodon alstoni) is a species in the genus Sigmodon. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems. Distributed across Colombia and Venezuela.