Confidence: I'm as sure as I can be.
Notes: It's one of the green frog species. Three occur in this area: the marsh frog Pelophylax ridibundus, the edible frog P. esculentus and the pool frog P. lessonae. They are hard to identify at the best of times. This one looks most like a pool or edible frog due to its relatively short legs, but I couldn't say which.