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 (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mammifères)	Mammalia (mammifères)
Order	Carnivora (carnivores)	Rodentia (Rodents)
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. (mammifères)

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