#1841 · 🐸 amphibians
Moor Frog
🇳🇱 Heikikker ·Rana arvalis
7 photos from iNaturalist (Creative Commons) · credits & licences
what is it?
The moor frog ( Rana arvalis ) is a slim, reddish-brown, semiaquatic amphibian native to Europe and Asia. It is a member of the family Ranidae, or true frogs.
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- Spotted 136 times in the Netherlands on iNaturalist: the #7 most seen of the amphibians in NL.
- 11,535 observations worldwide on iNaturalist.
- Scientifically named by Sven Nilsson in 1842 (184 years ago).
fact sheet
- English
- Moor Frog
- Nederlands
- Heikikker
- scientific name
- Rana arvalis
- class
- Amphibia
- order
- Anura
- family
- Ranidae
- IUCN Red List
- LC · least concern
- sightings in NL
- 136
- sightings in Europe
- 7,741
- sightings worldwide
- 11,535
- GBIF records in NL
- 29,440
- weight
- —
- length
- —
- lifespan
- —
- named
- 1842 by Sven Nilsson
IUCN in Dutch: niet bedreigd. Blank means the sources don't say.
relatives· Ranidae
#1836 📷 7European Common Frog
🇳🇱 Bruine Kikker
Rana temporaria
LC 👀 1.8k in NL
#1843 📷 7Marsh Frog
🇳🇱 Meerkikker
Pelophylax ridibundus
LC 👀 71 in NL
#1844 📷 8Edible Frog
🇳🇱 Bastaardkikker
Pelophylax esculentus
👀 66 in NL
#1846 📷 10Pool Frog
🇳🇱 Poelkikker
Pelophylax lessonae
LC 👀 40 in NL
#1853 📷 10Agile Frog
🇳🇱 Springkikker
Rana dalmatina
LC 👀 2 in NL
#1906 📷 10North American Green Frog
🇳🇱 Schreeuwkikker
Lithobates clamitans
LC 🌍 169.2k seen
#1857 📷 10American Bullfrog
🇳🇱 Amerikaanse Stierkikker
Lithobates catesbeianus
LC 🌍 153k seen
#1910 📷 9Wood Frog
🇳🇱 Boskikker
Lithobates sylvaticus
LC 🌍 76.2k seen
Sources: iNaturalist taxon 25488, Wikidata Q44324, GBIF 2426789, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.