What's even funnier about it is that animals do indeed use sound to communicate and that this application is both theoretically and technically feasible. Animals do not emit sounds for the sake of emitting sounds, they do so with specific intentions, desires, and goals, and as a result of specific systems that have developed towards the end of a complex system of communication involving vocal and auditory mechanisms,…
As the saying goes, "Simpsons did it" (and quite a long while ago, too): http://en.wikipedia.org/wiki/Brother,_Can_You_Spare_Two_Dime...