Dwarf round ray vs Long-tailed Dwarf Hamster

Urotrygon nana compared with Cricetulus longicaudatus

Key Differences

• Dwarf round ray is Near Threatened while Long-tailed Dwarf Hamster is Least Concern.

Taxonomic Classification

Rank	Dwarf round ray	Long-tailed Dwarf Hamster
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	Elasmobranchii	Mammalia (哺乳動物)
Order	Myliobatiformes (鱝目)	Rodentia (啮齿目)
Family	Urotrygonidae	Cricetidae
Genus	Urotrygon	Cricetulus
Species	Urotrygon nana	Cricetulus longicaudatus

Evolutionary Relationship

Dwarf round ray and Long-tailed Dwarf Hamster share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Dwarf round ray

NT — Near Threatened

Long-tailed Dwarf Hamster

LC — Least Concern

Physical Characteristics

Attribute	Dwarf round ray	Long-tailed Dwarf Hamster
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Long-tailed Dwarf Hamster

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.