Humpback smooth hound vs Lesser Capybara

Mustelus whitneyi compared with Hydrochoerus isthmius

Key Differences

• Humpback smooth hound is Critically Endangered while Lesser Capybara is Data Deficient.

Taxonomic Classification

Rank	Humpback smooth hound	Lesser Capybara
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Carcharhiniformes (Ground Sharks)	Rodentia (Rodents)
Family	Triakidae	Caviidae
Genus	Mustelus	Hydrochoerus
Species	Mustelus whitneyi	Hydrochoerus isthmius

Evolutionary Relationship

Humpback smooth hound and Lesser Capybara share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Humpback smooth hound

CR — Critically Endangered

Lesser Capybara

DD — Data Deficient

Physical Characteristics

Attribute	Humpback smooth hound	Lesser Capybara
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Humpback smooth hound

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

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

Lesser Capybara

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.