There are over700 MILLION dogs in the U.S. The FDA is INVESTIGATING "500" (as in 5 hundred) IF there is a link!! I do not know how ethically the FDA can release any info on such miniscule numbers that aren't even validated so I smell a rat such as Hill's paying off someone. Also a lady posted on here that her 14 1/2 year old dog died from heart disease & she's blaming grain free food!!! Lady, give your head a shake your dog was the equivalent of "100"+ years old!! Pretty sure she died if natural causes, be it heart or ?