They may not bark or meow, but termites do have methods of communication through sound just like other animals and insects. An interesting communication tool used by termites is head banging. In instances of alarm, termites will bang their heads against the wall to warn the other termites of imminent danger. If the infestation is large enough, these head banging warning sounds are actually audible to humans.
Do Termites Make Noise?
“Termite Head-Banging: Sounding the Alarm.” Acoustics.org. N.p., n.d. Web. 17 Nov. 2011. http://www.acoustics.org/press/152nd/fink.html
“Discovery Channel :: News – Animals :: Head-Banging Termites Caught on Film.” Discovery Channel : Science, History, Space, Tech, Sharks, News! . N.p., n.d. Web. 17 Nov. 2011. <http://dsc.discovery.com/news/2006/11/30/termite_ani.html>