Bighead spurdog vs Onca

Squalus bucephalus compared with Panthera onca

Key Differences

• Bighead spurdog is Data Deficient while Onca is Near Threatened.

Taxonomic Classification

Rank	Bighead spurdog	Onca
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Elasmobranchii	Mammalia (mamíferos)
Order	Squaliformes (Squaliformes)	Carnivora (carnívoros)
Family	Squalidae	Felidae (Cats)
Genus	Squalus	Panthera (Big Cats)
Species	Squalus bucephalus	Panthera onca

Evolutionary Relationship

Bighead spurdog and Onca share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Bighead spurdog

DD — Data Deficient

Onca

NT — Near Threatened

Population: ~64.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bighead spurdog	Onca
Diet	—	Carnivore
Average Lifespan	—	15 years
Average Length	—	1.9 m
Average Weight	—	100.0 kg

Habitat & Geographic Range

Bighead spurdog

Onca

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Ecuador, and Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Bighead spurdog

The Bighead spurdog (Squalus bucephalus) is a species in the genus Squalus.

Onca

O maior felino das Américas, atingindo até 100 kg com corpo robusto e musculoso e pelagem com padrão de rosetas característico. Encontrado do México até a América do Sul, com populações mais expressivas na Amazônia e no Pantanal. Nadadores poderosos e predadores de topo, os jaguares desempenham papel fundamental na regulação das populações de presas. Classificado como Quase Ameaçado, com sua área de ocorrência diminuindo devido ao desmatamento.