ours blanc vs Red Andean Oldfield Mouse

Ursus maritimus compared with Thomasomys auricularis

Key Differences

ours blanc is Vulnerable while Red Andean Oldfield Mouse is Data Deficient.

Taxonomic Classification

Rank	ours blanc	Red Andean Oldfield Mouse
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mammifères)	Mammalia (mammifères)
Order	Carnivora (carnivores)	Rodentia (Rodents)
Family	Ursidae (Bears)	Cricetidae
Genus	Ursus (Bears)	Thomasomys
Species	Ursus maritimus	Thomasomys auricularis

Evolutionary Relationship

ours blanc and Red Andean Oldfield Mouse share a common ancestor at the Class level: Mammalia. (mammifères)

Afficher Class: Mammalia

Conservation Status

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Red Andean Oldfield Mouse

DD — Data Deficient

Physical Characteristics

Attribute	ours blanc	Red Andean Oldfield Mouse
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.

Red Andean Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

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.