Blacktail spurdog vs Giant Otter

Squalus melanurus compared with Pteronura brasiliensis

Key Differences

• Blacktail spurdog is Data Deficient while Giant Otter is Endangered.

Taxonomic Classification

Rank	Blacktail 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 melanurus	Pteronura brasiliensis

Evolutionary Relationship

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

Conservation Status

Blacktail spurdog

DD — Data Deficient

Giant Otter

EN — Endangered

Physical Characteristics

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

Habitat & Geographic Range

Blacktail 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.

Blacktail spurdog

The Blacktail spurdog (Squalus melanurus) is a species in the genus Squalus. It is currently classified as Data Deficient on the IUCN Red List.