Brown Rat vs Coccora

Rattus norvegicus compared with Amanita calyptroderma

Taxonomic Classification

Rank	Brown Rat	Coccora
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Mammalia (Mammals)	Agaricomycetes (Mushrooms)
Order	Rodentia (Rodents)	Agaricales (Gilled Mushrooms)
Family	Muridae (Mice & Rats)	Agaricaceae (Agarics)
Genus	Rattus	Amanita (Amanitas)
Species	Rattus norvegicus	Amanita calyptroderma

Conservation Status

Brown Rat

LC — Least Concern

Coccora

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	Coccora
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

Coccora

Habitat

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

Brown Rat

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Coccora

The coccora (Amanita calyptroderma), also known as the California golden Amanita or the coccora mushroom, is a large, prized edible fungus in the family Amanitaceae, native to the Pacific Coast of North America from Oregon through California and into Baja California, Mexico. The species is especially associated with oak woodlands and mixed forests containing coast live oak, valley oak, and madrone, with which it forms ectomycorrhizal partnerships that are mutually beneficial—the fungus exchanges mineral nutrients for photosynthetically produced sugars from the tree's roots. The fruiting body is substantial and handsome: the cap ranges from pale yellowish-gold to rich orange-tawny, typically reaching 10–20 centimeters in diameter when fully expanded, with a smooth, sometimes patchy surface bearing remnants of the universal veil as scattered white patches. The gills are white and free from the stipe, and the base bears a large, sack-like volva from which the mushroom emerges—a characteristic Amanita feature. Despite belonging to the same genus as some of the world's most deadly mushrooms (Amanita phalloides, A. ocreata), the coccora is well-regarded by foragers in California, particularly within Italian-American communities who have long tradition of harvesting it. However, extreme care is essential, as it bears superficial resemblance to deadly species. The coccora is classified as Least Concern given its stable populations in western North American forests.