Four-toed Hedgehog vs Oso Polar

Atelerix albiventris compared with Ursus maritimus

Key Differences

• Four-toed Hedgehog is Least Concern while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Four-toed Hedgehog	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order	Erinaceomorpha (Erinaceomorpha)	Carnivora (carnívoros)
Family	Erinaceidae	Ursidae (Bears)
Genus	Atelerix	Ursus (Bears)
Species	Atelerix albiventris	Ursus maritimus

Evolutionary Relationship

Four-toed Hedgehog and Oso Polar share a common ancestor at the Class level: Mammalia. (mamíferos)

Conservation Status

Four-toed Hedgehog

LC — Least Concern

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Four-toed Hedgehog	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Four-toed Hedgehog

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Ecuador and Spain.

Oso Polar

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.

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.