Colombian Oldfield Mouse vs Chang'Er Tiaoshu

Thomasomys dispar compared with Euchoreutes naso

Key Differences

• Colombian Oldfield Mouse is Data Deficient while Chang'Er Tiaoshu is Least Concern.

Taxonomic Classification

Rank	Colombian Oldfield Mouse	Chang'Er Tiaoshu
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order same	Rodentia (啮齿目)	Rodentia (啮齿目)
Family	Cricetidae	Dipodidae
Genus	Thomasomys	Euchoreutes
Species	Thomasomys dispar	Euchoreutes naso

Evolutionary Relationship

Colombian Oldfield Mouse and Chang'Er Tiaoshu share a common ancestor at the Order level: Rodentia. (啮齿目)

Conservation Status

Colombian Oldfield Mouse

DD — Data Deficient

Chang'Er Tiaoshu

LC — Least Concern

Physical Characteristics

Attribute	Colombian Oldfield Mouse	Chang'Er Tiaoshu
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colombian Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Chang'Er Tiaoshu

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Colombian Oldfield Mouse

<em>Thomasomys dispar</em>, commonly known as the Colombian Oldfield Mouse, is a small rodent species belonging to the genus <em>Thomasomys</em> within the family Cricetidae. This species is classified as Data Deficient, indicating that insufficient information is currently available to evaluate its conservation status with confidence. It has been documented in Colombia, where it inhabits diverse terrestrial and aquatic-adjacent environments. Members of the genus <em>Thomasomys</em> are typically associated with high-altitude Andean habitats, including páramo grasslands, shrublands, and montane forest edges, where they occupy ground-level microhabitats and burrow in soft soils. These mice are generally omnivorous, consuming seeds, plant material, and invertebrates, though specific dietary data for <em>Thomasomys dispar</em> have not been recorded. Biological traits of this species remain poorly documented in the scientific literature. The Data Deficient classification highlights the need for targeted surveys in Colombian Andean regions to determine population size, distribution, and the ecological requirements of this poorly known rodent.