A tree frog is less than an inch long,yet its loud,clear call can be heard almost a mile away. This sound is hard to locate even thought the creature may be sitting nearby. Probably more presons hear than ever see the tiny animal. Only the full-grown male can sing,and the performance is an amazing sight to watch. The tree frog sits on its hind legs,leans back,and sings. Its white throat swells up unit it looks like a shiny bubble about to burst.