What Dog Owners Need to Know About the FDA's Grain-Free Diet Alert by Dogfooddirect.com | Monday, October 29, 2018 | 0 comment(s) The FDA launched an investigation into potential links between canine heart disease and grain-free diets. What is the FDA Investigating? Our dog's... no categories. Read More Comments View All 0 Comment(s). You must be logged in to post comments.