Polar bear vs Spineless Acaena

Ursus maritimus compared with Acaena inermis

Key Differences

• Polar bear is Vulnerable while Spineless Acaena is Not Evaluated.

Taxonomic Classification

Rank	Polar bear	Spineless Acaena
Kingdom	Animalia (Animals)	Plantae (plantas)
Phylum	Chordata (cordados)	Magnoliophyta (Flowering Plants)
Class	Mammalia (mamíferos)	Magnoliopsida (Dicots)
Order	Carnivora (carnívoros)	Rosales (Roses & Allies)
Family	Ursidae (Bears)	Rosaceae (Rose Family)
Genus	Ursus (Bears)	Acaena
Species	Ursus maritimus	Acaena inermis

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Spineless Acaena

NE — Not Evaluated

Physical Characteristics

Attribute	Polar bear	Spineless Acaena
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic 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.

Spineless Acaena

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Austria, Belgium, France, Netherlands, and United Kingdom.

Polar bear

O maior carnivoro terrestre da Terra, o urso-polar pode ultrapassar 700 kg e e encontrado pelo gelo marinho artico, do Canada ate a Russia. Mamiferos marinhos altamente especializados que dependem do gelo marinho para cacas de focas e focas-barbadas. Excelentes nadadores capazes de percorrer grandes distancias em aguas abertas. Classificado como Vulneravel, com populacoes sob severa pressao devido a rapida perda de gelo marinho artico causada pelas mudancas climaticas.