Bitter Beech Bolete vs Brown Rat

Caloboletus calopus compared with Rattus norvegicus

Taxonomic Classification

Rank	Bitter Beech Bolete	Brown Rat
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (Mammals)
Order	Boletales (Boletales)	Rodentia (Rodents)
Family	Boletaceae	Muridae (Mice & Rats)
Genus	Caloboletus	Rattus
Species	Caloboletus calopus	Rattus norvegicus

Conservation Status

Bitter Beech Bolete

LC — Least Concern

Brown Rat

LC — Least Concern

Physical Characteristics

Attribute	Bitter Beech Bolete	Brown Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bitter Beech Bolete

Habitat

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

Range

Distributed across Denmark, Norway, Sweden, and United States.

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).

Bitter Beech Bolete

The Bitter Beech Bolete (Caloboletus calopus) is a species in the genus Caloboletus. It is currently classified as Least Concern on the IUCN Red List. 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.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States