Over the last five years, I’ve used Amicus, Back to Basics, Perfect Balance Grain Free, Nutrisource grain free, and Pro Pac grain free. I haven’t had any soft stools on these from my foster dogs. Since your boy is small, you might consider adding some real bone to his diet and reducing his kibble some. I’ve found that adding a Raw Meaty Bone 2 or 3 times a week firms up stools. Even something as small as a chicken neck or wing. He can even have a meal out of a drumstick. Another option is to feed a premade raw nugget like Primal nuggets or Primal Pronto and Nature’s Variety Instinct has a small nugget formula. These raw foods have include ground bone and you can just give him one 1 oz nugget with his kibble meal or a couple pieces of the small nuggets.
