The healthy microbes in your dog’s digestive system have many important jobs to do, including absorbing and making nutrients and preventing illness by supporting the immune system. Stress, dietary changes, or antibiotic use can disrupt that important microbial balance and lead to health problems including digestive upsets. This is where probiotics come in to help. Keep reading to find out more about canine probiotics, discover when they’re usually used and learn which are some of the best ones to give to your dog.