Where? Amphibians are difficult to ID unless you know where they are from. You do not have to compromise your privacy, but an area might help.
That said, from looking your user name up, I would suspect it of being a Eurasian Marsh Frog, Rana (Pelophylax) ribundus.
Here is a link that might be useful: Red List
Thank you for your reply . I saw it at Turkey, (city: izmir) parallel:27:09 , meridian:38:25
Saw this video with different reptiles and amphibians, it might be helpful in telling different species! :) http://youtu.be/Rg0H-pmmi_k
Leopard Frog, I raise them.
Not a Leopard Frog since Leopard Frogs are new world (North American) species. This frog was from Turkey.