[britt*any]

Hi i need help!
my dog stanley is nine. He has had runnny direah for at least 3 days now. its a dark brown color. We withheld his food for a day and then tried him on food again. Once again his stool was runnny. His urine is normal . and hes had water during this sickness. Hes been his usual self. Please can someone tell me what this is. Im very very worried for him
thank you so much
-brittany