[theBCnut]

Seniors can lose some of the natural acidity of the stomach and that affects their ability to digest their food especially proteins, so the first thing I would try is to add apple cider vinegar to his food. I use about 1/2 teaspoon per cup of food and I mix it with water so my dogs don’t all of a sudden get a bite of pure vinegar. You may also want to add a spoonful of pure canned pumpkin to his food.