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:Atlantis FOUND? Ancient castle discovered under lake in TurkeyBig One WARNING: West coast of US at risk of HUGE earthquake and DEVASTATING tsunamiALIEN bugs delivered on SPACE DUST may have given birth to life on EarthRussia, in Reversal, Confirms Radiation SpikeTrilobites: The Scuba Diving Flies of California’s Mono LakePleiades Cluster Culmination LIVE stream - Watch the spectacular Pleiades star online HERE