Bests & Worsts Reviews from Amazon

This review is for the lamb flavor. I bought chicken and it didn't agree with my dog. I believe he has a poultry intolerance so I tried the lamb flavor. I originally got this food from Petco and it worked great for my pup, so I started ordering it from Amazon as it's more convenient. I had this on subscription and ran out of dog food a few days before my new bag arrived, so I bought a small bag at Petco. When my subscription bag arrived, I compared the two foods and they do not look exactly the same. I've been feeding my dog the Amazon purchased food for a few months and he has occasional diarrhea but I assumed it was from sensitive stomach/eating junk off the ground, but now I wonder if it is the food. Maybe it's just a different batch, but since there is barely a price difference I'll purchase this food from Petco from now on. I've attached photos of the food side by side, the Petco food on the left is a slightly lighter color and seems more "dense" (Amazon version has a lot of little holes in the kibbles). Update: After feeding my dog the Petco food for a week, he hasn't had diarrhea once, where before it was usually at least "loose" once or twice a week. I do not reccommend buying this food on Amazon, however the real stuff from Petco has worked great for my dog so far.