Fun fact: Most frogs don’t say ribbit, but one of the earliest film sound libraries included a frog that does say ribbit, and so that sound is the sound of a frog in many films and television programs, but not in nature documentaries which record their own audio.

So much of the English speaking world, far, far more broadly than the spread of that type of frog, think frogs typically say ribbit.

If you watch a nature documentary about frogs, you’ll hear a vast array of different sounds, and this map will make much more sense.