ours blanc vs rue des murailles

Ursus maritimus compared with Asplenium ruta-muraria

Key Differences

ours blanc is Vulnerable while rue des murailles is Least Concern.

Taxonomic Classification

Rank	ours blanc	rue des murailles
Kingdom	Animalia (animal)	Plantae (plante)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Mammalia (mammifères)	Polypodiopsida (Filicopsida)
Order	Carnivora (carnivores)	Polypodiales (Polypodiales)
Family	Ursidae (Bears)	Aspleniaceae
Genus	Ursus (Bears)	Asplenium
Species	Ursus maritimus	Asplenium ruta-muraria

Conservation Status

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

rue des murailles

LC — Least Concern

Physical Characteristics

Attribute	ours blanc	rue des murailles
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic Range

ours blanc

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.

rue des murailles

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and North America (United States).

ours blanc

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.