Taxonomy
The family the moor frog belongs to, Ranidae, is a broad group containing 605 species. The family is like a “catch-all” for ranoid frogs that do not belong to any other families. Since this is the case, the characteristics that define them are more general and the frogs are found all throughout the world, on every continent but Antarctica.
The moor frog’s genus, Rana, is a little more specific. Frogs of this genus are found in Europe, Asia, South America, and North America. The moor frog is not one of the ones belonging to either of the Americas, unlike the Foothill Yellow-legged Frog, Cascades Frog, and Columbia Spotted Frog which are all found in North America.
The moor frog’s scientific name, Rana arvalis means "frog of the fields". It is also called the altai brown frog because frogs from the Altai Mountains in Asia have been included in the Rana arvalis species. The altai frogs have some different characteristics like shorter shins, but currently there is no official distinction and all frogs are placed under Rana arvalis. The taxonomy may be more defined in the future.
Read more about this topic: Moor Frog