Spaying is not only the responsible choice for pet owners as it prevents unwanted litters and the cost if caring for homeless pets. As it turns out, neutering may extend your dog’s life, too, according to a recent study from the University of Georgia, reported by Smithsonian Magazine http://blogs.smithsonianmag.com/smartnews/2013/04/ dogs-may-live-longer-if-they-are-fixed/#ixzz2R7dfeJr2.  Researchers in Georgia looked at more than…