🧬 Biological Classification (Kingdom to Species)Glirulus japonicus
Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Rodentia
Family
Gliridae
Genus
Glirulus
Species
Glirulus japonicus
Japanese Dormouse (Glirulus japonicus)📸 Photo

Photo: Katuuya · CC BY-SA 3.0 · Wikimedia Commons Source

Mammalia🍂 Omnivore

Japanese Dormouse

Glirulus japonicus (Japanese Dormouse · ヤマネ)

🛡️ Conservation Status (IUCN Red List)LC (Least Concern)
DDData Deficient
LCLeast Concern
NTNear Threatened
VUVulnerable
ENEndangered
CRCritically End.
EWExtinct in Wild
EXExtinct
Geological Era
Extant
Diet
Omnivore
Length · Height
10.5~13.5cm · No data
Mass · Top Speed
14~40g · No data
Habitat & Fossil Locality
Deciduous and coniferous forests of Japan at 400–1,800 m in elevation (in the trees)

💡 Everyday Comparisons for Size, Mass & Speed

  • 💡 Its maximum weight of 40 g is about five Korean 500-won coins (about 7.7 g each), and its head-and-body length of 13.5 cm is similar to the length of a ballpoint pen (Comparison).
  • 💡 Animal Diversity Web notes that because it is an avid insect hunter, it helps reduce locust swarms that damage Japanese agriculture.

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

📊 Mass & Speed Index (0–100)
⚖️ Mass Index (Blue Whale ~190 t = 100, log scale)14

Site-computed relative index from recorded values; not a formal scientific metric.

#일본겨울잠쥐#Glirulus japonicus

📖 1. Overview

The Japanese Dormouse is a small arboreal dormouse living in the forests of Japan, looking like a cross between a mouse and a squirrel.

🦴 2. Anatomy & Morphology

It has soft hazel-brown fur with a black stripe down the middle of its back and tufts of hair in front of its ears. Its tail is bushy and flattened, and soft foot pads allow it to run upside down along the underside of branches.

🔍 3. Ecology & Behavior

Active alone in the trees at night, it eats seeds, fruits, insects, and bird eggs, weaves nests out of moss and bark, and enters a long hibernation during cold months.

🇰🇷 4. Connection to Korea

No direct record connecting this species to Korea has been found.

📚 Sources & References

Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.

🔗 Related & Comparable Species

DATA & LICENSE

📚 Data & Image Sources and Licenses

Full Citation Principles →
① Photos: Wikimedia Commons

Every photo's author and license is verified via the Wikimedia Commons API (PD, CC0, CC BY, CC BY-SA) and displayed with full attribution and source links.

② Summaries: Wikipedia

Wikipedia summary excerpts on detail pages are licensed under CC BY-SA 4.0 and linked to the original article.

③ Measurements & IUCN Status

Length, mass, and speed are representative estimates from published literature. Conservation status follows IUCN Red List categories (iucnredlist.org).

④ Silhouettes & Scale Diagrams

Silhouettes on the size comparison stage use open-licensed PhyloPic illustrations and custom body diagrams drawn at an exact 1m = 1m scale.

Expert review: looking for reviewers · compiled by quoting official (English) sources

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