First thing first, you know your dog best and hence you should reach us any time you get worried about your dog’s health. What you have to put in mind is that there are some forms of diarrhea that are alarming. If there are some blood on the stool, then bear in mind that it is a chronic cause and you should act swiftly. You should also contact me if you detect that the dog cannot eat well and has fever and fatigue. If the diarrhea persists for more than a week, you shouldn’t hesitate to take your dog to the reach out to us. I have had patients who have suffered for a long time the owner thinking that it is just a matter to end the next day. Some of them bring the dogs after the infections have really damaged the intestines and the cost of attending to them can be high.