Fauna
Reptile

Japanese Rat Snake

Elaphe climacophora

Also known as Aodaisho, Blue General Snake

Japanese rat snakes are versatile semi-arboreal hunters found across forests, farmlands, and suburban habitats throughout Japan. Adults feature soft olive-green scales often adorned with subtle dark longitudinal stripes, while juveniles possess a brown blotched pattern that deters predators. Highly adept at scaling stone walls and tree trunks, these diurnal snakes actively search bird nests, rodent burrows, and rural rooflines for prey.

DiurnalClimberConstrictor
Japanese Rat Snake reference1 / 7
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyRodents, Birds, Bird eggs
Predators
  • Eagles
  • Tanuki
  • Mustelids
ThreatsHabitat loss, road mortality, agricultural alteration
HabitatsForests, grasslands, farmland, suburban areas, parks
Life span15–20 years
Classification
  1. FamilyColubridae
  2. SpeciesElaphe climacophora
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Non-venomous but can bite defensively or emit a musk if handled; observe from a respectful distance.
Why it is dangerous
Delivers a painful defensive bite with sharp teeth and secretes a foul smell from anal glands when cornered.
How to recognize a risky encounter
Look for an olive-green to pale grey body with faint dark stripes and large round pupils.
What to do
Maintain a respectful distance of at least two meters and allow the snake an open escape route.
Responsible observation
  • Spotting: Look for them basking on stone walls, tree branches, or rural rooflines during warm mornings.
  • Handling: Non-venomous but prone to musking or biting when cornered, so maintain a safe distance.
Related species
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