AnimalvsAnimal
Der blau Moorfrosch (Rana arvalis) bei der Paarung im Gewässer🐸

Photo: Tanja Riedel · CC BY 4.0

SpeciesAnuraRanidae
Amphibians

🐸Moor frog

Rana arvalis Nilsson, 1842

The moor frog is a slim, reddish-brown, semiaquatic amphibian native to Europe and Asia. Moor frogs are known for their ability to freeze solid and survive thawing. The frog makes use of various cryoprotectants i.e. antifreeze that decrease its internal freezing temperature. The species is distributed over a large range, covering a significant portion of Eurasia. Male moor frogs are known to turn blue temporarily during the height of mating season. This coloration is assumed to signal a mate's fitness. Moor frogs typically mate through multimale amplexus, a form of polyandry.

Text: Wikipedia, CC BY-SA 4.0.

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Photos
2
Measurements
5
vs you
≈ 1/5,740th of your weight
Also called
Rana arvalis, Altai Brown Frog (Altai Mountains Populations)
Conservation status
LCLeast concern

IUCN Red List assessment, 2023.

Population trendDecreasing
Key measurements
Body mass
0.01 kg
Body length
not recorded
Shoulder height
not recorded
Top speed
not recorded
Bite force
not recorded
Maximum lifespan
11 years
All measurements ↓
Facts and figures

Everything we know about the Moor frog

Typical adult figures. Where a value is an estimate rather than a measurement, it says so.

Body mass
0.01 kg
AmphiBIO
Details ↓

Source: AmphiBIO · v1 (Oliveira et al. 2017) · CC BY 4.0

Maximum lifespan
11 yearsrecord 11 years · AmphiBIO
AnAge
Details ↓

data quality: acceptable

Record: largest individual on record

Source: AnAge · AnAge build 15, 2023-07-03 (HAGR) · CC BY 3.0

Litter size
about 1750
AnAge
Details ↓

data quality: acceptable

Source: AnAge · AnAge build 15, 2023-07-03 (HAGR) · CC BY 3.0

Diet
arthropods
AmphiBIO
Details ↓

Source: AmphiBIO · v1 (Oliveira et al. 2017) · CC BY 4.0

Volume l
0 Laverage
Details ↓

Body mass at ~1.0 kg/L, the density of vertebrate tissue.

average = a mean across sexes or species in a group.

Not recorded for Moor frog yet: body length, shoulder height, top speed, bite force.

Where it sits

Family tree

  1. kingdomAnimalia
  2. ›phylumChordata
  3. ›classAmphibia
  4. ›orderAnura
  5. ›familyRanidae
  6. ›genusRana
  7. ›speciesRana arvalis
Full lineage
  1. classAmphibians · Amphibia
  2. orderFrogs & toads · Anura
  3. superfamilyRanoidea
  4. familyRanidae
All 13 branches ↓
  1. kingdomMetazoa
  2. phylumChordata
  3. subphylumCraniata
  4. subphylumVertebrata
  5. superclassGnathostomata
  6. superclassSarcopterygii
  7. superclassTetrapoda
  8. classAmphibians · Amphibia
  9. superorderBatrachia
  10. orderFrogs & toads · Anura
  11. suborderNeobatrachia
  12. superfamilyRanoidea
  13. familyRanidae
More

More about the Moor frog

Closest relative on this site
🐸 Common frog — last shared an ancestor ≈ 8.4 million years ago.
In other languages
spissnutefrosk (nb), Moorfrosch (de), skokan ostronosý (cs), viitasammakko (fi), Rana arvalis (fr), Heikikker (nl) … and 25 more languages
More photos
Der blau Moorfrosch (Rana arvalis) bei der Paarung im GewässerRanaArvalisFemale
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