Arctic barrel-bubble vs Blunt-headed Salamander

Retusa obtusa compared with Ambystoma amblycephalum

Key Differences

• Arctic barrel-bubble is Least Concern while Blunt-headed Salamander is Critically Endangered.

Taxonomic Classification

Rank	Arctic barrel-bubble	Blunt-headed Salamander
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Amphibia (Amphibians)
Order	Cephalaspidea (Cephalaspidea)	Caudata (Caudata)
Family	Retusidae	Ambystomatidae
Genus	Retusa	Ambystoma
Species	Retusa obtusa	Ambystoma amblycephalum

Evolutionary Relationship

Arctic barrel-bubble and Blunt-headed Salamander share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Arctic barrel-bubble

LC — Least Concern

Blunt-headed Salamander

CR — Critically Endangered

Physical Characteristics

Attribute	Arctic barrel-bubble	Blunt-headed Salamander
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic barrel-bubble

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Blunt-headed Salamander

Habitat

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

Range

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

Arctic barrel-bubble

The Arctic barrel-bubble (Retusa obtusa) is a species in the genus Retusa. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Blunt-headed Salamander

The Blunt-headed Salamander (Ambystoma amblycephalum) is a species in the genus Ambystoma. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neo