Giant Otter vs Napo Spiny-rat

Pteronura brasiliensis compared with Proechimys quadruplicatus

Key Differences

• Giant Otter is Endangered while Napo Spiny-rat is Least Concern.

Taxonomic Classification

Rank	Giant Otter	Napo Spiny-rat
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 same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order	Carnivora (食肉目)	Rodentia (啮齿目)
Family	Mustelidae (Weasels & Otters)	Echimyidae
Genus	Pteronura	Proechimys
Species	Pteronura brasiliensis	Proechimys quadruplicatus

Evolutionary Relationship

Giant Otter and Napo Spiny-rat share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

Giant Otter

EN — Endangered

Napo Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Giant Otter	Napo Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela