I must weigh in on this issue. Bogey has has "poopy problems" since day one! We started on Fromms large breed puppy, stools went soft serve and then downhill from there. We switched to Fromm beef Fritatta. Did ok until we got to 3/4 cup, then soft serve, runny. First poop of the day was nice and formed, it loosened as the day went on. I tried backing off, and the poops did not firm up. So, we transitioned to Purevita bison all stages. Again, he did great until we got to 3/4 cup 3 x day( he is only 5 months old). Although on the Purevita his stools were formed, he was pooping 7-9 times a day- huge amounts! But, I was willing to put up with that. Then all of a sudden, soft serve started! No changes in diet, nothing new. It was getting worse! So, back to boiled rice and hamburger for a week. Almost immediately the stools firmed up! I re- challenged the Purevita TWICE and as soon as he got more than 1/4 cup- soft serve, frequent stools. I was tearing my hair out! We had his stools tested- completely normal!! So I put him back on bland for 6 days. Beautiful formed SMALL stools, only TWICE a day! Decided to go with a limited ingredient food, so I picked natures variety instinct lamb. He has been on it 2 weeks- he gets 1/2 cup twice a day with homemade ( boiled rice and lean hamburger) about 1/4-1/3 cup as a topper. Occasionally I will substitute the burger with an egg. He gets 1 TBSP ACV once a day, ans I have cut out the noon meal- but I do give him. A little snack of cottage cheese or yogurt. He is doing WONDERFUL!! 2 SOLID AND SMALL poops a day! I think the lesson here is trial and error. What works for one bully may not work for another. Whatever the changes, do them SLOWLY! Good luck!