Billions of bacteria inhabit the dogs’ digestive tract and, collectively, these bacteria are referred to as the gut flora and are essential for the maintenance of gut health and optimal nutrient absorption. A healthy gut flora also plays an important role in immunity and prevention of certain diseases. Canine gut flora can be adversely affected by many factors, including stress, illness, parasitic infection, antimicrobial treatment and changes in diet. Protecting the balance of the gut flora, between beneficial and harmful bacteria, is vital for the wellbeing of your dog.