Two house dogs here have been on grain free dog food and treats for many years. Both have very bad ear and skin allergies. Never knew a dog could literally be allergic to grass - how does that happen?
One house dog has such a problem that he is on a daily dose of Apoquel (steroid for dogs). Give the guy a couple of potato chips or half a biscuit, and his ears will start to rot off.
One is at least 14, the other is 12. So far no issues. We have fed grain free for probably ten years. Maybe we are lucky.
