When it comes to the Mayo Clinic Diet, the name behind the diet belongs to one of the most respected medical organizations in the world, so it's no surprise the diet is popular.
Confidence votes 680. As of September 30th, 2011, there are roughly 2,889,000 WWII veterans alive in the USA according to the U.S. Department of Veteran Affairs. Worldwide, there are about 5,250,000 still around as of late 2011.
But thousands of dogs were left behind during the Vietnam War. Of the roughly 4,900 dogs that the United States used in Vietnam, around 2,700 were turned over to the South Vietnamese army, and a staggering 1,600 were euthanized, according to veteran and former Marine dog handler Ron Aiello.