I bought TOTW Prarie formula 1/22/2012 and weaned Jake to that with 1/4 of the new to 3/4 of the old food for about 7 days then 1/2 to 1/2 aprox 7 days then 1/4 old to 3/4 new; then about 4 days ago I have been on all TOTW. The previous food was Iams Large breed puppy. With that said I also had given him a Kong with some treats and yougert in it about 6 days ago ; I came home to diarrhea in the kennel. I have not feed any treats since that point just the food thinking mabye it was the yougert; he had had the yougert approx 3-4 times prior. I had put a few milk bones chicken flavor in the kong (which was new) so I was sure it was that or the dairy. I read some info later about milk bones and diarrhea; i threw those away! Well he has had diarrea 2 more times in the kennel; and has approx 10 bumps on his back that I can see due to the hair raised when he leans his upper body down; mostly across the shoulders to mid upper back. I would have thought if he was allergic to something in the TOTW I would have seen it in the 1st 2 weeks. I am not sure how I should proceed to feed him at this point. Any advice would be appreciated. He did have 2 bumps on his belly groin area last night that have gone down drastically; now flush with the skin and faded from dark pink to almost skin tone. I normally feed 2 cups in the AM and 2 cups in the PM.