Yeast is a naturally occurring bacterium in the body that is actually good for the body in moderation. When it over-produces, infections occur. For a dog, most yeast infections take place in the ears or on the skin, causing the dog itchiness and discomfort. Some dog owners might consider it a small problem, but it can result in sores if left untreated. Unfortunately, medications from the vet can be expensive. There is a home cure that can be tried before taking the dog to the vet.
Feed the dog raw meats. Dogs are made to eat meat rather than vegetables for sustenance. The problem with dog food is that many dry foods and even wet foods are full of vegetables, especially corn, which is cheaper for the company. These can often cause the infections, so removing the dry dog food and feeding the dog raw meats instead will often be helpful.
Make a mixture of apple cider vinegar and water, in equal parts, in a glass. Make sure that the vinegar is free of added yeast. Some brands will add yeast, which can make the problem worse, but the brands that avoid yeast will help eliminate the yeast infection.
Using a dropper, drop a few drops of the water and vinegar solution into the dog's ear twice a day. This will slowly eliminate the yeast infection. For yeast infections on the skin, use the solution and gently pour it over the dog instead of using a dropper.