brown bear vs Fly Agaric

Ursus arctos compared with Amanita muscaria

Key Differences

• brown bear is Extinct while Fly Agaric is Least Concern.
• brown bear is omnivore while Fly Agaric is decomposer.
• brown bear is 3000.0x heavier than Fly Agaric.
• brown bear lives longer (25 years vs 1 years).

Taxonomic Classification

Rank	brown bear	Fly Agaric
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Mammalia (Mammals)	Agaricomycetes (Mushrooms)
Order	Carnivora (Carnivorans)	Agaricales (Gilled Mushrooms)
Family	Ursidae (Bears)	Agaricaceae (Agarics)
Genus	Ursus (Bears)	Amanita (Amanitas)
Species	Ursus arctos	Amanita muscaria

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	brown bear	Fly Agaric
Diet	Omnivore	Decomposer
Average Lifespan	25 years	1 years
Average Length	2.0 m	20 cm
Average Weight	300.0 kg	100 g

Habitat & Geographic Range

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

Fly Agaric

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), Oceania and the Pacific (New Zealand), and South America (Brazil, Chile, Colombia).

brown bear

The world's most widely distributed bear species, brown bears range from North America and Europe across Russia to Japan, occupying forests, tundra, and alpine meadows. Adults can weigh up to 700 kg in coastal Alaskan populations. Omnivores that consume berries, roots, fish, and carrion, brown bears are a keystone species that distribute nutrients across landscapes. Most populations are stable, though some subspecies are threatened.

Fly Agaric

Among the most iconic and recognizable fungi on Earth, fly agaric mushrooms display striking red caps with white flecked warts across boreal forests of the Northern Hemisphere. Despite their fairy-tale appearance, they contain potent psychoactive compounds including muscimol and ibotenic acid and are moderately toxic. They form critical mycorrhizal symbioses with birch, pine, and spruce trees, exchanging mineral nutrients for carbon and playing essential roles in boreal forest nutrient cycling.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden