Don't underestimate the tongue, a muscular organ that humans use for licking, breathing, tasting, swallowing and speaking. But this organ varies widely in color, shape, length and function across ...

Eric Bgin on FlickrThe animal kingdom is a cacophony of grunts, growls, whistles, squeaks, and other noises that sound utterly crazy to the human ear but are essential to animals survival. We know ...