I've been trying different brands for my dog and its hard to find one that doesn't set her off on a week of the runs. Oh yes i blend it carefully, quarter of the new etc and blend for a month to get it done gradually but no luck with so many brands. Well i looked at the source of fat and i think shes not tolerating canola oil or sunflower oil ...only chicken fat works for her. So many bags of food i have had to give to my friends, yikes. I like a max of 16 % fat in my dogs food. Wellness and Holistic Select work and this new kind Precise was excellent for sensitive tummy.