Chihuahua Gray vs Great Hammerhead

Aphonopelma pallidum compared with Sphyrna mokarran

Key Differences

• Chihuahua Gray is Least Concern while Great Hammerhead is Critically Endangered.

Taxonomic Classification

Rank	Chihuahua Gray	Great Hammerhead
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Arachnida (Arachnids)	Chondrichthyes (Cartilaginous Fish)
Order	Araneae (Araneae)	Carcharhiniformes (Ground Sharks)
Family	Theraphosidae	Sphyrnidae (Hammerhead Sharks)
Genus	Aphonopelma	Sphyrna (Hammerhead Sharks)
Species	Aphonopelma pallidum	Sphyrna mokarran

Evolutionary Relationship

Chihuahua Gray and Great Hammerhead share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Chihuahua Gray

LC — Least Concern

Great Hammerhead

CR — Critically Endangered

Trend: Decreasing ↓

Physical Characteristics

Attribute	Chihuahua Gray	Great Hammerhead
Diet	—	Carnivore
Average Lifespan	—	40 years
Average Length	—	5.0 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Chihuahua Gray

Habitat

Typically found in terrestrial habitats from forests to deserts.

Great Hammerhead

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 5 distinct biome types spanning the Indomalayan and Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Taiwan, and Venezuela. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Chihuahua Gray

The Chihuahua Gray (Aphonopelma pallidum) is a species in the genus Aphonopelma. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial habitats from forests to deserts.

Great Hammerhead

The largest hammerhead shark species, great hammerheads reach up to 6 meters and are found in tropical and subtropical coastal waters worldwide. Their distinctive T-shaped head (cephalofoil) dramatically increases sensory surface area for electroreception, enabling them to detect buried stingrays through sand with exceptional precision — stingrays are a preferred prey. Critically Endangered, with populations declining dramatically due to highly valued fins and bycatch mortality.