I have a friend who has rescued greyhounds. She only feeds them home cooked fresh meats, rice and vegetables. One of her doggies had cancer and had a leg removed. He lived 3 more years and her vet said it was because she fed him “clean” food.
The only thing that’s holding us back is that four large dogs consume a surprising amount of food each day. Our largest is usually 115 to 120 lbs., next weighs 100 lbs., then two at about 85 lbs.
Still, I’m very concerned.