Ezo Naki-Usagi vs Pixie Foam

Ochotona hyperborea compared with Stereocaulon pileatum

Key Differences

• Ezo Naki-Usagi is Least Concern while Pixie Foam is Critically Endangered.

Taxonomic Classification

Rank	Ezo Naki-Usagi	Pixie Foam
Kingdom	Animalia (動物)	Fungi (菌界)
Phylum	Chordata (脊索動物)	Ascomycota (子嚢菌門)
Class	Mammalia (哺乳類)	Lecanoromycetes (チャシブゴケ菌綱)
Order	Lagomorpha (ウサギ目)	Lecanorales (チャシブゴケ目)
Family	Ochotonidae	Stereocaulaceae
Genus	Ochotona	Stereocaulon
Species	Ochotona hyperborea	Stereocaulon pileatum

Conservation Status

Ezo Naki-Usagi

LC — Least Concern

Pixie Foam

CR — Critically Endangered

Physical Characteristics

Attribute	Ezo Naki-Usagi	Pixie Foam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ezo Naki-Usagi

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Pixie Foam

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.