Hi Ruth Anne G,
I foster a lot of rescue dogs from kill shelters. He might be suffering from “stress diarrhea”, which is common in puppies and even adult dogs when moving to a new situation. He could also have worms or some other intestinal parasites. The vet will be able to determine those when you see him/her. Has he had any of his shots at all? Many shelters do them on intake, but I have known of many that don’t do anything and it sounds like that may be the situation in your case.
How is he doing on the chicken and rice? If it’s controlling the diarrhea, I would keep him on that for a few days and see what the vet finds as far as parasites, etc. You can slowly introduce him to a new food. It sounds like he will be a large breed so you might want to check the forums on large breed puppy foods. There is also a link on the dog other side of this that discusses large breed puppy food. Good luck with your pup! Keep us posted! 🙂
