This can also affect that delicate balance of natural microorganisms that live in your dog's body. (cuteness.com)
Fasting, while drinking water and other cleansing beverages, will flush out the digestive system and reduces the number of natural microorganisms in the gut. (naturalhealth365.com)
Probiotics are natural microorganisms similar to those found in healthy digestive tracts. (mommysbliss.com)