When the Irish Water Spaniel has diarrhea, it is necessary to block the feeding of food. Purchase probiotics and pet antidiarrheal medicines and feed them to the dog. After a day of observation, check whether the dog's diarrhea has improved. If the dog has diarrhea repeatedly and the dog is not in good spirits, If the vitality decreases, it is recommended to send the Irish Water Spaniel to the pet hospital for further examination and targeted treatment. Healthy dogs will not suffer from diarrhea, and owners must pay attention when their dogs have diarrhea at home.