Science in the News 2

       The article is about "Wolves Howl Because They Care: Social Relationship Can Explain Variation in Vocal Production." by Cell Press. 
http://www.sciencedaily.com/releases/2013/08/130822122804.htm

        Animal vocal production may be seen as voluntary. Wolfs can use their vocalizations in a flexible way. Scientist  know little of  why animals do this sounds. On the science center human walk with wolves. They record each of their reaction wolfs have when they take them for a walk.This observations shows that wolves howl more  when another wolf in which has a relationship with the others wolves or is in a high rank leaves the wolf pack. Scientist think that they howl so that they can reunite with the other wolves or to stay in contact with them.

  In my opinion this may be true because animals for example wolfs howl to communicate with each their. So then they can be howling to communicate with other wolfs near the area to form a group to hunt or to just see were are the other wolf packs. The author of this article did gave much of evidence in which it makes it more easier to believe that wolfs are howling for
communication or to find other wolf packs.