Thank you to everyone who gave me advice on my puppy and his diarrhea issues. Looks like the vet was right about the food and I suppose he was allergic to either chicken or corn...or maybe both. After two days on a fish and potatoes based food, he is back to normal. Woo hoo.
Anyway, thanks again. I feel like I got so much good info from everyone here. Thanks for the support.
Glad you're finding answers...