Dogs can have a digestive system that is sensitive just like humans do. A dog with a sensitive digestive system can have an irritated or upset stomach from time to time. You need to be careful and mindful when you have a dog like this because they can suffer heavily (from let's say, a digestive upset or something much worse) even with a minor change in their diet. The question is: how would you know if your beloved pet is one of those with a sensitive digestive system? You need to pay serious attention so you can detect digestive problems quite easily. For instance, there are several common symptoms of a mild digestive upset such as recurring but intermittent diarrhea, redundant flatulence or gassiness, as well as infrequent vomiting. Your dog will show these symptoms as soon as a suspected treat or food is given to him. So you need to watch carefully.
Any sign of illness should be brought to the attention of your professional vet Jacksonville, FL.