Carriker’s Speckled Tree-rat vs Colombian Small-eared Shrew

Pattonomys carrikeri compared with Cryptotis colombiana

Key Differences

• Carriker’s Speckled Tree-rat is Data Deficient while Colombian Small-eared Shrew is Least Concern.

Taxonomic Classification

Rank	Carriker’s Speckled Tree-rat	Colombian Small-eared Shrew
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Rodentia (อันดับสัตว์ฟันแทะ)	Soricomorpha (อันดับตุ่น)
Family	Echimyidae	Soricidae
Genus	Pattonomys	Cryptotis
Species	Pattonomys carrikeri	Cryptotis colombiana

Evolutionary Relationship

Carriker’s Speckled Tree-rat and Colombian Small-eared Shrew share a common ancestor at the Class level: Mammalia. (สัตว์เลี้ยงลูกด้วยน้ำนม)

Conservation Status

Carriker’s Speckled Tree-rat

DD — Data Deficient

Colombian Small-eared Shrew

LC — Least Concern

Physical Characteristics

Attribute	Carriker’s Speckled Tree-rat	Colombian Small-eared Shrew
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Carriker’s Speckled Tree-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.

Colombian Small-eared Shrew

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Carriker’s Speckled Tree-rat

The Carriker’s Speckled Tree-rat (Pattonomys carrikeri) is a species in the genus Pattonomys. It is currently classified as Data Deficient on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.