Acultzingo Pigmy Salamander vs Polar bear

Thorius dubitus compared with Ursus maritimus

Key Differences

• Acultzingo Pigmy Salamander is Critically Endangered while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Acultzingo Pigmy Salamander	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Mammalia (Mammals)
Order	Caudata (Caudata)	Carnivora (Carnivorans)
Family	Plethodontidae	Ursidae (Bears)
Genus	Thorius	Ursus (Bears)
Species	Thorius dubitus	Ursus maritimus

Evolutionary Relationship

Acultzingo Pigmy Salamander and Polar bear share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Acultzingo Pigmy Salamander

CR — Critically Endangered

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Acultzingo Pigmy Salamander	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Acultzingo Pigmy 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.

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

Acultzingo Pigmy Salamander

The Acultzingo Pigmy Salamander (Thorius dubitus) is a species in the genus Thorius. 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.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.