I guess I have been very fortunate.
I have always fed dry food (no can food, no treats)
that is always called poor quality foods because the
high end holistic (solid gold) food gave my mastiffs ear infections.
But since I switched the mastiffs back to the cheap food
that I feed the pits I have not had another ear infection.
But as I posted before I supplement the food with missing link,
oils and or raw and cooked scraps.
Where no wood is, there the fire goeth out: so where there is no talebearer, the strife ceaseth.