Possible Link Between Grain-Free Dog Food and Heart Disease, F.D.A. Says The number of dogs on the popular diets who have developed enlarged hearts is small but concerning. Researchers are beginning to investigate causes. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:REVEALED: Just how destructive a Yellowstone eruption would beThe Saturday Profile: An Expert on Chinese Medicine, but No New Age Healer'We should be wary' Stephen Hawking warns the world NOT to contact aliensSinosphere: Chinese City Urges Comrades to Do Their Part and ReproduceCould black holes be bridges to other worlds? Could there be NINE space dimensions?Alien planet with TWO SUNS discovered by Hubble Telescope