Colombian Small-eared Shrew vs Gray-bellied Rice Rat

Cryptotis colombiana compared with Nephelomys moerex

Key Differences

• Colombian Small-eared Shrew is Least Concern while Gray-bellied Rice Rat is Extinct.

Taxonomic Classification

Rank	Colombian Small-eared Shrew	Gray-bellied Rice Rat
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Mammalia (Säugetiere)	Mammalia (Säugetiere)
Order	Soricomorpha (Soricomorpha)	Rodentia (Nagetiere)
Family	Soricidae	Cricetidae
Genus	Cryptotis	Nephelomys
Species	Cryptotis colombiana	Nephelomys moerex

Evolutionary Relationship

Colombian Small-eared Shrew and Gray-bellied Rice Rat share a common ancestor at the Class level: Mammalia. (Säugetiere)

Conservation Status

Colombian Small-eared Shrew

LC — Least Concern

Gray-bellied Rice Rat

EX — Extinct

Physical Characteristics

Attribute	Colombian Small-eared Shrew	Gray-bellied Rice Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colombian Small-eared Shrew

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Gray-bellied Rice Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

Colombian Small-eared Shrew

<em>Cryptotis colombiana</em>, the Colombian small-eared shrew, is a diminutive insectivorous mammal belonging to the family Soricidae, endemic to Colombia. This species typically inhabits montane environments, including humid cloud forests and high-altitude grasslands known locally as páramo, where it forages actively through leaf litter and soil for invertebrate prey. Small-eared shrews of the genus <em>Cryptotis</em> are characterised by their notably reduced external ears, high metabolic rates, and nearly constant activity cycles driven by the energetic demands of maintaining body temperature. <em>Cryptotis colombiana</em> is currently assessed as Least Concern by the IUCN, suggesting that its population is relatively stable within its Colombian range. Despite this status, Andean shrews face ongoing pressures from land conversion, cattle grazing in páramo ecosystems, and climate-driven shifts in vegetation zones. The species contributes to soil aeration and invertebrate population regulation within its montane habitat. Biological traits of this species remain poorly documented in the scientific literature.