The following is excerpted from an article by Dr. Alicia McWatters, Ph.D., C.N.C.:

"Many vitamins, minerals and other nutrients and substances are available in ACV to improve the health of your dog. ACV can provide them with enzymes and important minerals, such as potassium, calcium, magnesium, sulfur, chlorine, phosphorus, iron, silicon and other trace minerals. The vitamins contained in ACV are bioflavonoids (vitamin P), beta-carotene (precursor to vitamin A), vitamin C, E, B1, B2, and B6. Tannins from the crushed cell walls of fresh apples as well as malic acid, tartaric acid, propionic acid, acetic acid and pectin (fiber) are also contained in ACV. Be sure to purchase organic unfiltered, unpasteurized, naturally fermented ACV for its medicinal features. ACV ranges in color from a light golden to orange. You’ll know you’ve found the right stuff if you see sediment, referred to as the "mother of vinegar" on the bottom of the bottle. Do NOT buy white distilled vinegar, as it has none of the beneficial elements listed above.

I began using ACV as a supplement for my dogs in 1994. Some holistic health practitioners recommend that ACV be placed in a dog’s drinking water. I recommend placing it in fresh food because I believe that a dog’s drinking water should be free of additives, with the exception of an electrolyte solution or a medicinal product that is used on a short-term basis. The dosage I use is 1 tsp. for small dogs and 1 tbs. for medium-large dogs. It can also be given orally diluted in water under the guidance of a vet or holistic health practitioner.

ACV can be useful to your dog’s health in conjunction with feeding it a wide variety of foods, but should never be looked upon as a panacea. Fresh food ingredients, such as raw meat and bones, fruits, vegetables, grains and dairy products make up the wholeness that will effectively help your dog to achieve optimum health.

Often times one looks for the magic ingredient that will miraculously make their dog well. Whether it is an antibiotic, grapefruit seed extract, Aloe vera or milk thistle... there will always be a single popular or trendy supplement of the moment and this supplement will be promoted as the great healing agent. But, if we focus on the part rather than the whole we are not taking a holistic approach to our dog’s health."

Excerpt from "Apple Cider Vinegar -- Miracle Health System" book:

"Fight Fleas, Ticks, & Mites: Flea collars & sprays are toxic. Instead use vinegar. Drop tsp Bragg ACV in water bowl, dab on skin, & swab ears if mites."