Dwarf round ray vs Gray-footed Spiny-rat

Urotrygon nana compared with Proechimys poliopus

Key Differences

• Dwarf round ray is Near Threatened while Gray-footed Spiny-rat is Vulnerable.

Taxonomic Classification

Rank	Dwarf round ray	Gray-footed Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Rodentia (Rodents)
Family	Urotrygonidae	Echimyidae
Genus	Urotrygon	Proechimys
Species	Urotrygon nana	Proechimys poliopus

Evolutionary Relationship

Dwarf round ray and Gray-footed Spiny-rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Gray-footed Spiny-rat

VU — Vulnerable

Physical Characteristics

Attribute	Dwarf round ray	Gray-footed Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Gray-footed Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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