In this respect, several findings by Ontario biologist are important. Pimlott reported in 1960 that wolves often replied to recordings of howling broadcast near them. Several other people have also reported that wolves will reply to recorded howls, human imitations, and even fire sirens. The presence of order in a group of animals depends on the ability of members to communicate among themselves. Without communication, the behavior patterns that promote organization would be useless.
Communication is defined here as the conveying of information from one individual to another.
Communication among higher animals involves vision, smell, and hearing, and this is the case with the wolf. No matter which sense is involved, the individual doing the communicating behaves, actively or passively, deliberately or nondeliberatley, in a way that is meaningful to another individual. Territory, when dealing with wolves, is a more complex issue than it may first appear as. It is not rigid, however, and depends on several factors such as food availability, landmass, and climate. The idea of territory is not really the most important issue, what it leads into is communication, which is the vital aspect in the wolf population.