Is your dog's food making him sick?

This is Zeppelin. He went from a healthy 4 1/2 year old dog at the peak of health to a sick old man, as seen in this photo, to the grave in less than 6 months. There was nothing the veterinary clinic or veterinary hospital could do to save him. https://www.ldnews.com/story/news/2019/07/03/7-must-knows-fda-report-dog-food-and-heart-disease/1618748001/