Within each of those, you have different carbohydrate sources to choose from based on what your dog can tolerate. (happypetsnow.com)
In the end what works for one may not work for another and we all have different carbohydrate tolerance and different protein requirements. (ketodietapp.com)
A formula with several different carbohydrate ingredients will probably not provide your dog with the best nutrition. (petcareeducation.com)