Bigeye Sixgill Shark vs gray wolf

Hexanchus nakamurai compared with Canis lupus

Key Differences

• Bigeye Sixgill Shark is Near Threatened while gray wolf is Critically Endangered.

Taxonomic Classification

Rank	Bigeye Sixgill Shark	gray wolf
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class	Elasmobranchii	Mammalia (lớp Thú)
Order	Hexanchiformes (Bộ Cá mập nguyên thủy)	Carnivora (bộ Ăn thịt)
Family	Hexanchidae	Canidae (Dogs & Wolves)
Genus	Hexanchus	Canis (Dogs & Wolves)
Species	Hexanchus nakamurai	Canis lupus

Evolutionary Relationship

Bigeye Sixgill Shark and gray wolf share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Bigeye Sixgill Shark

NT — Near Threatened

gray wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

Physical Characteristics

Attribute	Bigeye Sixgill Shark	gray wolf
Diet	—	Carnivore
Average Lifespan	—	13 years
Average Length	—	1.6 m
Average Weight	—	45.0 kg

Habitat & Geographic Range

Bigeye Sixgill Shark

Habitat

Native to Asia and South America, inhabiting ecosystems characteristic of the region.

Range

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

gray wolf

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, deserts and xeric shrublands, and tropical and subtropical dry broadleaf forests, among 13 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Seychelles), Asia (Japan), Europe (5 countries), North America (7 countries), Oceania and the Pacific (Marshall Islands, Vanuatu), and South America (5 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Bigeye Sixgill Shark

The Bigeye Sixgill Shark (Hexanchus nakamurai) is a species in the genus Hexanchus. It is currently classified as Near Threatened on the IUCN Red List. Native to Asia and South America, inhabiting ecosystems characteristic of the region.

gray wolf

The most widely distributed wild canid, gray wolves range from North America across Eurasia in diverse habitats including tundra, forests, and grasslands. Highly social animals living in family packs led by a dominant breeding pair. As keystone predators, wolves regulate prey populations and profoundly shape ecosystem structure, as demonstrated by their reintroduction in Yellowstone. Once heavily persecuted, populations are recovering in many regions.