Bighead spurdog vs Fly Agaric

Squalus bucephalus compared with Amanita muscaria

Key Differences

• Bighead spurdog is Data Deficient while Fly Agaric is Least Concern.

Taxonomic Classification

Rank	Bighead spurdog	Fly Agaric
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Elasmobranchii	Agaricomycetes (Mushrooms)
Order	Squaliformes (Squaliformes)	Agaricales (Gilled Mushrooms)
Family	Squalidae	Agaricaceae (Agarics)
Genus	Squalus	Amanita (Amanitas)
Species	Squalus bucephalus	Amanita muscaria

Conservation Status

Bighead spurdog

DD — Data Deficient

Fly Agaric

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Bighead spurdog	Fly Agaric
Diet	—	Decomposer
Average Lifespan	—	1 years
Average Length	—	20 cm
Average Weight	—	100 g

Habitat & Geographic Range

Bighead spurdog

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).

Bighead spurdog

The Bighead spurdog (Squalus bucephalus) is a species in the genus Squalus.

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.