I'm transitioning my 8 month-old from Chicken Soup for the Puppy Lovers Soul to Taste of the Wild (High Prairie Canine Formula: Roasted Bison & Roasted Venison).
The first day he had a loose stool but I gave him apple slices and haven't had a problem. Chicken Soup is a good food he just wasn't too excited about it. Now he picks the TOTW pieces out of the Chicken Soup. I have noticed that the odor of his stool is stronger than when he was eating Chicken Soup.
I like the ingredients and price of TOTW, and everything I've read seems to be positive. Most of all he loves it.