Fatspine spurdog vs Giant Otter

Squalus crassispinus compared with Pteronura brasiliensis

Key Differences

• Fatspine spurdog is Least Concern while Giant Otter is Endangered.

Taxonomic Classification

Rank	Fatspine spurdog	Giant Otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Squaliformes (Squaliformes)	Carnivora (Carnivorans)
Family	Squalidae	Mustelidae (Weasels & Otters)
Genus	Squalus	Pteronura
Species	Squalus crassispinus	Pteronura brasiliensis

Evolutionary Relationship

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

Conservation Status

Fatspine spurdog

LC — Least Concern

Giant Otter

EN — Endangered

Physical Characteristics

Attribute	Fatspine spurdog	Giant Otter
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Fatspine spurdog

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.