Listen to Frogs (green frog) croaking in swamp online. Frogs (green frog) croaking in swamp is an English language song and is sung by Sound Effects Royalty Free. Frogs (green frog) croaking in swamp, from the album Thunder, Rain Forest, Nature, was released in the year 2010. The duration of the song is 1:09. Download English songs online from JioSaavn.