Giant Otter vs Grizzled Colilargo

Pteronura brasiliensis compared with Oligoryzomys griseolus

Key Differences

• Giant Otter is Endangered while Grizzled Colilargo is Least Concern.

Taxonomic Classification

Rank	Giant Otter	Grizzled Colilargo
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Carnivora (Carnivorans)	Rodentia (Rodents)
Family	Mustelidae (Weasels & Otters)	Cricetidae
Genus	Pteronura	Oligoryzomys
Species	Pteronura brasiliensis	Oligoryzomys griseolus

Evolutionary Relationship

Giant Otter and Grizzled Colilargo share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Giant Otter

EN — Endangered

Grizzled Colilargo

LC — Least Concern

Physical Characteristics

Attribute	Giant Otter	Grizzled Colilargo
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.

Grizzled Colilargo

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇻🇪 Venezuela