Dwarf round ray vs Giant Otter

Urotrygon nana compared with Pteronura brasiliensis

Key Differences

• Dwarf round ray is Near Threatened while Giant Otter is Endangered.

Taxonomic Classification

Rank	Dwarf round ray	Giant Otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Carnivora (Carnivorans)
Family	Urotrygonidae	Mustelidae (Weasels & Otters)
Genus	Urotrygon	Pteronura
Species	Urotrygon nana	Pteronura brasiliensis

Evolutionary Relationship

Dwarf round ray and Giant Otter share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Giant Otter

EN — Endangered

Physical Characteristics

Attribute	Dwarf round ray	Giant Otter
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.