Brown Butter Bolete vs Bely Medved

Butyriboletus persolidus compared with Ursus maritimus

Key Differences

Brown Butter Bolete is Least Concern while Bely Medved is Vulnerable.

Taxonomic Classification

Rank	Brown Butter Bolete	Bely Medved
Kingdom	Fungi (грибы)	Animalia (животные)
Phylum	Basidiomycota (базидиомицеты)	Chordata (хордовые)
Class	Agaricomycetes (агарикомицеты)	Mammalia (млекопитающие)
Order	Boletales (Болетовые)	Carnivora (хищные)
Family	Boletaceae	Ursidae (Bears)
Genus	Butyriboletus	Ursus (Bears)
Species	Butyriboletus persolidus	Ursus maritimus

Conservation Status

Brown Butter Bolete

LC — Least Concern

Bely Medved

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Brown Butter Bolete	Bely Medved
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Brown Butter Bolete

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Bely Medved

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.

Brown Butter Bolete

The Brown Butter Bolete (Butyriboletus persolidus) is a species in the genus Butyriboletus. It is currently classified as Least Concern on the IUCN Red List. Typically found in forest floors, decomposing wood, and soil ecosystems.

Bely Medved

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.