The parties often refer to the result of the negotiation as a collective bargaining agreement (CBA) or as a collective employment agreement (CEA).
When theyâre happy and satisfied they make a humming sound. This sounds like a blend of buzzing and humming. When in danger alpacas will sound an alarm which sounds a little like a horseâs whinny. And, as you now know, before mating alpaca stallions âorgleâ.
Though it may sound like a maniacal giggle, the hyena call is actually a sign of frustration, according to research that will be presented May 21, 2009 at an Acoustical Society of America meeting. Credit: LiveScience/Nicolas Mathevon/University of Ca.