vs Polar bear

Pannaria rubiginosa compared with Ursus maritimus

Key Differences

is Extinct while Polar bear is Vulnerable.

Taxonomic Classification

Rank		Polar bear
Kingdom	Fungi (फफूंद)	Animalia (प्राणी)
Phylum	Ascomycota (पुट कवक)	Chordata (रज्जुकी)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (स्तनधारी)
Order	Peltigerales (Peltigerales)	Carnivora (मांसाहारी गण)
Family	Pannariaceae	Ursidae (Bears)
Genus	Pannaria	Ursus (Bears)
Species	Pannaria rubiginosa	Ursus maritimus

Conservation Status

EX — Extinct

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Portugal, and United States.

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.

Pannaria rubiginosa is a foliose lichen in the family Pannariaceae, formerly found growing on bark and mossy rocks in humid temperate forests. It is assessed as Extinct (EX) on the IUCN Red List, having disappeared from its known localities due to habitat loss and air pollution.

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.