Japanese Brown Frog
Japanese Brown FrogJapanese Brown FrogJapanese Brown FrogJapanese Brown Frog

Japanese Brown Frog

Rana japonica

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Nikko National Park
7 Verified records at Nikko National Park
August Best month highest sighting rate
🌅 Crepuscular When it's active at dawn and dusk

The Japanese brown frog (Rana japonica) is a species of frog in the family Ranidae, endemic to Japan. Its natural habitats are temperate grassland, rivers, swamps, irrigated land, and seasonally flooded agricultural land. Wikipedia →

20–30% of wildlife watchers report a Japanese Brown Frog sighting in Nikko National Park, based on 7 days of visitor records from GBIF citizen-science data.

Closest Relatives at Nikko National Park

Montane Brown Frog
LC

Montane Brown Frog

🌅 Crepuscular Amphibian

Rana ornativentris

10–20% · With luck
Tago's Brown Frog
LC

Tago's Brown Frog

Amphibian

Rana tagoi

Insufficient data
Daruma Pond Frog
LC

Daruma Pond Frog

🌅 Crepuscular Amphibian

Pelophylax porosus

30–40% · Possible
Black-spotted Frog
LC

Black-spotted Frog

Amphibian

Pelophylax nigromaculatus

Insufficient data
Proto wrinkled frog

Proto wrinkled frog

Amphibian

Glandirana reliquia

Insufficient data
Japanese Toad
LC

Japanese Toad

🌅 Crepuscular Amphibian

Bufo japonicus

40–50% · Likely
Forest Green Treefrog
LC

Forest Green Treefrog

🌅 Crepuscular Amphibian

Zhangixalus arboreus

20–30% · Possible
Schlegel's Green Tree Frog
LC

Schlegel's Green Tree Frog

🌅 Crepuscular Amphibian

Zhangixalus schlegelii

20–30% · Possible
Kajika Frog
LC

Kajika Frog

🌅 Crepuscular Amphibian

Buergeria buergeri

10–20% · With luck

📅 Monthly Probability

10–20
Jan
10–20
Feb
5–10
Mar
5–10
Apr
20–30
May
<5
Jun
20–30
Jul
40–50
Aug
30–40
Sep
30–40
Oct
5–10
Nov
10–20
Dec

🌅 When They're Spotted

Most active at dawn and dusk · across all parks (global)

🌅Crepuscular
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Nikko National Park 🇯🇵 Japan
20–30%

More parks will be added in future updates.

Quick answers

What are the chances of seeing a Japanese Brown Frog in Nikko National Park?

About 24% of wildlife watchers report a Japanese Brown Frog sighting in Nikko National Park, based on 7 days of visitor records from GBIF citizen-science data.

When is the best time to see Japanese Brown Frog in Nikko National Park?

August has the highest sighting rate for Japanese Brown Frog in Nikko National Park in our monthly data.

← Back to Nikko National Park