Plain yogurt is good for dogs as a source of calcium, zinc, potassium, protein, riboflavin and vitamins. Unsweetened yogurt with live acidophilus and few preservatives is recommended. Frozen yogurt is a special treat for dogs during hot weather.
The live bacteria in yogurt are probiotics that help maintain the balance of bacteria in a dog's digestive system. This is especially important for dogs who are taking antibiotics. Both good and bad bacteria can be depleted by antibiotics, and consuming yogurt helps repopulate the digestive system with beneficial bacteria. Puppies benefit from consuming yogurt to help combat yeast infections, which they are highly susceptible to.