| It was during our vacation in the Philippines when I first heard of that sound. There is a heavy rainfall when we arrived and I couldn't sleep that night because of the sound. I asked my friend about that sound she just laugh at me and said it was just a frog. I Told her a frog sounds that big. Yes and when I see it, it was so small to produce that kind of sound. I have searched from Google and I have found out that Bull frog makes this call. |
Here is a link that might be useful: bull frog sound
