Kevin is 7 months old, about 50 pounds, and was having a bad time about a week ago that I eventually narrowed down to switching him to Taste of the Wild. I guess I've been pretty bad about keeping Kevin's diet consistant. When I got him, he was on Nutro, and I switched him to Science Diet because I thought it was good, switched him to Blue Buffalo when I realized Hills was crap, and after a couple of months of that, I switched him to Wellness (large breed puppy - I know he's not a large breed, but I'm picking my battles with the girlfriend on this one...) because he tended to have soft stools with Blue Buffalo. Through all that, apart from the soft stools with Blue Buffalo, he never seemed to be bothered by switching foods. And I wasn't really doing a good job transitioning, either. Maybe a couple of days of half and half and then all in with the new food, but generally, Kevin has moved from food to food without any problems. I thought I had the puppy with the stomach of steel. Kevin's been doing great on Wellness, but it's pretty expensive. I was at a different pet store a couple of weeks ago and saw that they carried Taste of the Wild, and that it was cheaper than Wellness. I had read on dogfoodanalysis.com that TOTW was very good, and it's more highly rated than Wellness (and I needed dog food), so I bought a bag. Then, on the way home, Kevin and I stopped at the dog park, and he spent some time playing in the water. He gulped a bunch down, but it's a large body of moving water (Colorado River) so I didn't worry much about it. When we got home, I fed Kevin half Wellness and half TOTW. And then that night, he had several accidents (violent, by the looks of them) while I slept, and when I took him out in the morning, he just... fauceted all over the grass. Really really bad runs, and he did not look happy about it. So at first I thought... maybe this is just him getting used to the new food. I think when I've switched him before, he's had a couple of soft poops before getting "used" to the new food, and going back to normal. I thought maybe this was just a more extreme version of this, and he'd be back to normal soon. After about a day and a half, it was pretty clear that this was not the case, so I started thinking maybe his stomach was upset from the water he drank at the dog park, and maybe he just needed to flush his system or whatever (or possibly go to the vet). So I started giving him pedialyte, and switched him to a bland homecoooked diet of chicken and rice. Over several days, he slowly got better, though not quite back to 100% with the poop. And then I switched him back to TOTW, and he went right back to having really bad diarrhea. Well, I probably should've realized it was the food at this point, but everything I've read about TOTW was so good, and even specifically solid poops were a consistent thing I'd read from people's experience with TOTW, and by this point I had convinced myself that he had a bug from the water and needed to go to the vet. But since he had shown improvement on the home cooked diet, I decided to try putting him back on Wellness, just to return things to how they had been and see if that fixed it before resorting to taking him to the vet. And after doing that, he was immediately fine. Literally, the next time I took him out, he had a solid poop after a week of having either diarrhea or soft stools. And he's been fine for about a week now, on the old diet. Is this just an instance of "no right food for everybody", and TOTW doesn't agree with my dog? Or is the problem because I was cutting corners as far as transitioning the food is concerned? Maybe TOTW, as a high meat content no grain food, is just a lot more different to his system than the other foods I've switched him from? I'm just kinda baffled that it was the food that causing all of the problems. I was actually really excited when I got the bag of TOTW, thinking hey, here's a better food than what I'm feeding and it's cheaper too... Kevin's back to being fine on Wellness, and so that's what I'll keep him on for the foreseeable future, but I've got most of a bag of TOTW just sitting there, and its something like $10 or $15 a bag (30 lb) cheaper than Wellness. Just a bummer that that didn't work out like I'd hoped. Has anyone else experienced anything like this with TOTW?