I'm a little late on this post but... Grizz was sick about 3 weeks ago. He had exactly what Nebo had/has. Grizz was sick for about a week and he made messes all over the house. My boyfriend’s mom fed him boiled meat and rice to settle his stomach, and he was better. It's probably just doggy flu. I remember Angie had diarrhea for about a week once. Just watch Nebo to make sure he doesn't get dehydrated.