Chip Collection, Apple Chips Dog Treats, 6ozAs the old saying goes, an apple a day keeps the doctor away but is this true for our furry canine companions as well? As it turns out, it is! Apples are actually a fantastic, affordable, healthy and low calorie treat for dogs. They are a good source of vitamin A, vitamin C and dietary fiber. They also help to keep a dog's teeth clean along with freshening their breath.