# Moor frog (*Rana arvalis*)

Canonical page: https://creaturedata.com/animals/moor-frog  
Data as of: 2026-11-11

The moor frog (Rana arvalis) is an amphibian in the frogs and toads subgroup, belonging to the family Ranidae and the order Anura. It is a small frog with an adult body mass of 10.8 g, and it is an invertivore whose main foods are arthropods. Its microhabitat is aquatic, arboreal and terrestrial, and its activity pattern is cathemeral. The moor frog lays eggs, 2,300 per clutch, with a larval stage in its development, and it is listed as Least Concern on the IUCN Red List.

## Quick facts

| Fact | Value |
|---|---|
| Weight | 10.8 g |
| Length | Not recorded |
| Lifespan | Not recorded |
| Diet | Invertivore |
| Longest recorded lifespan | 11 years |
| Main food | arthropods |
| Habitat | Not recorded |
| Young per litter or clutch | 1,599 – 3,000 |
| Reproduction | Eggs |
| Active | Day and night (cathemeral) |
| Conservation status | Least Concern (IUCN) |
| Countries on record | Not recorded |

## Classification

- kingdom: Animalia
- phylum: Chordata
- class: Amphibia
- order: Anura
- family: Ranidae
- genus: Rana
- species: *Rana arvalis* Nilsson, 1842

Synonyms: *Rana altaica*, *Rana altaica*, *Rana angustifrongs*, *Rana angustifrongs*, *Rana arvalis altaica*, *Rana arvalis arvalis*, *Rana arvalis issaltschikovi*, *Rana arvalis striata*, *Rana arvalis wolterstorffi*, *Rana asiatica oxyrrhinus*, *Rana oxyrhina*, *Rana oxyrhina*, *Rana oxyrhinus striatus*, *Rana oxyrhinus var. striatus*, *Rana oxyrrhinus*, *Rana palustris*, *Rana temporaria arvalis*, *Rana temporaria oxyrrhina*, *Rana terrestris*, *Rana terrestris wolterstorffi*, *Rana ulginosa*, *Rana wolterstorffi*

## Common questions

### What kind of animal is the moor frog?

The moor frog is an amphibian in the frogs and toads subgroup. It belongs to the family Ranidae and the genus Rana.

### What does the moor frog eat?

The moor frog eats arthropods. It is classed as an invertivore.

### How heavy is the moor frog?

An adult Moor frog weighs 10.8 g, which places it in the small size class.

### Is the moor frog endangered?

No. The moor frog is listed as Least Concern on the IUCN Red List, which is not a threatened category.

### How long does the moor frog live?

The moor frog lives up to 11 years, according to the highest value reported by our sources.

### How many eggs does the moor frog lay?

The moor frog lays 2,300 eggs per clutch, with reported values from 1,599 to 3,000. Its development includes a larval stage.

### Who named the moor frog?

The moor frog was named Rana arvalis by Nilsson, 1842.

### What are other names for the moor frog?

The moor frog is also called Field frog, Siberian frog, Altai brown frog and Swedish swamp frog.

## Sources

- [AmphiBIO, a global database for amphibian ecological traits](https://doi.org/10.6084/m9.figshare.4644424.v5), CC BY 4.0, v1. Oliveira, B.F., São-Pedro, V.A., Santos-Barrera, G., Penone, C. & Costa, G.C. (2017) AmphiBIO, a global database for amphibian ecological traits. Scientific Data 4: 170123. https://doi.org/10.1038/sdata.2017.123. Data: https://doi.org/10.6084/m9.figshare.4644424.v5
- [Catalogue of Life eXtended Release](https://www.checklistbank.org/dataset/316691), CC BY 4.0, 2026-10-16 XR. Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf
- [Wikimedia Commons](https://commons.wikimedia.org), per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed), 2026-11-11. Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence).
- [Wikidata](https://www.wikidata.org), CC0 1.0, 2026-11-11. Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service).
- [Wikipedia (English)](https://en.wikipedia.org), CC BY-SA 4.0, 2026-11-11. Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).

Cite as: Moor frog (Rana arvalis). Retrieved from https://creaturedata.com/animals/moor-frog