Zweisporiger Champignon vs Eisbär

Agaricus bisporus compared with Ursus maritimus

Key Differences

Zweisporiger Champignon is Not Evaluated while Eisbär is Vulnerable.
Zweisporiger Champignon is decomposer while Eisbär is carnivore.
Eisbär is 22500.0x heavier than Zweisporiger Champignon.
Eisbär lives longer (25 years vs 1 years).

Taxonomic Classification

Rank	Zweisporiger Champignon	Eisbär
Kingdom	Fungi (Pilze)	Animalia (Tier)
Phylum	Basidiomycota (Ständerpilze)	Chordata (Chordatiere)
Class	Agaricomycetes (Mushrooms)	Mammalia (Säugetiere)
Order	Agaricales (Champignonartige)	Carnivora (Raubtiere)
Family	Agaricaceae (Agarics)	Ursidae (Bears)
Genus	Agaricus (Button Mushrooms)	Ursus (Bears)
Species	Agaricus bisporus	Ursus maritimus

Conservation Status

Zweisporiger Champignon

NE — Not Evaluated

Trend: Stable →

Eisbär

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Zweisporiger Champignon	Eisbär
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

Zweisporiger Champignon

Habitat

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

Range

Distributed across Austria, Belgium, Norway, and Sweden.

Eisbär

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.

Zweisporiger Champignon

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.

Eisbär

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.