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:Australia weather so hot bats 'BOILING' to death: Flying foxes fall from sky in heatwaveStuck in SPACE? Fears astronaut can't return to Earth after ASTONISHING growth spurtSpaceX Zuma mission: Is the US spy satellite LOST? Where is Zuma spacecraft now?U.K. Ban on Microbeads in Personal Care Products Takes EffectStephen Hawking: Earth will become unbearably boiling hot thanks to climate changeSpaceX Zuma Mission: What has happened to US spy satellite? Where is it now?