My biggest issue would be with feeding any food that long of a term. The probiotics in the gut adjust to what is being fed, they get out of balance, so when the dog does finally get into something that they aren’t used to they have a major stomach upset. Feeding variety has the same health benefits for dogs as in does for us There is no perfect food. Even a well rounded meal should not be eaten day in and day out for years. Suppose your friend eats a free range egg, 2 pieces of organic, non GMO toast, half an orange, and a glass of milk for breakfast, I’ll even throw in a glass of low sodium organic vegetable juice. Sounds like a pretty healthy meal, right? But what if that was all he ate for breakfast, lunch, and dinner. Pretty soon, he would have an over abundance of some vitamins and a lack of some others. It would take a long time for him to show any ill affects from it, and even longer for someone else to notice them. It might take years for the diseases that come from missing those vitamins to show up, but sooner or later they would.
