Giant Otter vs Surprise Thorius

Pteronura brasiliensis compared with Thorius insperatus

Key Differences

• Giant Otter is Endangered while Surprise Thorius is Critically Endangered.

Taxonomic Classification

Rank	Giant Otter	Surprise Thorius
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Carnivora (Carnivorans)	Caudata (Caudata)
Family	Mustelidae (Weasels & Otters)	Plethodontidae
Genus	Pteronura	Thorius
Species	Pteronura brasiliensis	Thorius insperatus

Evolutionary Relationship

Giant Otter and Surprise Thorius share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Giant Otter

EN — Endangered

Surprise Thorius

CR — Critically Endangered

Physical Characteristics

Attribute	Giant Otter	Surprise Thorius
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.

Surprise Thorius

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.