I found this in one of the forums that i joined. Interesting facts about Apple Cider Vinegar for your dogs. read on...
Apple Cider Vinegar In their book, The Holistic Guide for a Healthy Dog, Wendy Volhard and Kerry Brown, DVM, note that “Apples contain a large amount of potassium plus phosphorus, chlorine, sodium, magnesium, calcium, sulfur, iron, fluorine, silicon, and many trace minerals. . . . ACV (apple cider vinegar) is credited with killing bacteria outright. . . .” Depending on the size of the dog, add 1/4 teaspoon (toy dogs) to 3 tablespoons (dogs over 50 lbs) total per day to their meals. Itchy skin is a sign that the skin is too alkaline in nature. Fleas and ticks do not find acidic skin desirable to live on, hence the importance of maintaining a slightly acidic body (for dogs, the normal pH range is 6.2-6.5). You can use straight ACV as an after-bath rinse; before going out into the country; and on beginning hot spots. If the skin is already broken, dilute the ACV 1:1 with water and spray it on the coat. As an ear rinse, use several drops of the 1:1 dilution weekly to avoid ear infections. These health conditions and others (including sore joints and the beginnings of arthritis), indicate a potassium deficiency, so ACV is a cheap way to help your animal’s health issues. For internal consumption, be sure to purchase an ACV product with the “mother” in it (i.e., should be raw unfiltered ACV), not the kind you buy at the grocery store. A good brand is Bragg’s, which can be found at health food stores. For external use such as to help rebalance skin pH and repel insects, I've found that the grocery store version seems to work fine, diluted 1:1 with water.
