Cultivated Mushroom vs ours blanc

Agaricus bisporus compared with Ursus maritimus

Key Differences

Cultivated Mushroom is Not Evaluated while ours blanc is Vulnerable.
Cultivated Mushroom is decomposer while ours blanc is carnivore.
ours blanc is 22500.0x heavier than Cultivated Mushroom.
ours blanc lives longer (25 years vs 1 years).

Taxonomic Classification

Rank	Cultivated Mushroom	ours blanc
Kingdom	Fungi (Fungi)	Animalia (animal)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (mammifères)
Order	Agaricales (Gilled Mushrooms)	Carnivora (carnivores)
Family	Agaricaceae (Agarics)	Ursidae (Bears)
Genus	Agaricus (Button Mushrooms)	Ursus (Bears)
Species	Agaricus bisporus	Ursus maritimus

Conservation Status

Cultivated Mushroom

NE — Not Evaluated

Trend: Stable →

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Cultivated Mushroom	ours blanc
Diet	Decomposer	Carnivore
Average Lifespan	1 years	25 years
Average Length	6 cm	2.4 m
Average Weight	20 g	450.0 kg

Habitat & Geographic Range

Cultivated Mushroom

Habitat

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

Range

Distributed across Austria, Belgium, Norway, and Sweden.

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.

Cultivated Mushroom

The most widely cultivated mushroom globally, the button mushroom in its various growth stages — white button, cremini, and portobello — accounts for approximately 40% of world mushroom production. Domesticated from wild Agaricus species found in grasslands across Europe and North America, they are grown commercially in controlled environments on composted straw and manure. Rich in B vitamins, selenium, and dietary fiber, they are one of the most nutritionally versatile fungi in human cuisine.

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.