I’ve been feeding Scooter, my 2-year-old Toy Xoloitzcuintli on Pro Plan all of his life. His breeder fed Pro Plan to all of their dogs and he was weaned on it. I tried him on the Innova Evo with fish and he developed hives. So, I picked up a bag of Artemis Maximal Dog two days ago (after giving the unused Evo to our local shelter). I’ve been mixing the new food in with his old food. Scooter is free-fed. I’ve been doing this since he was a puppy and he just eats when he is hungry. Anyway, since I’ve been mixing some of the Artemis in with his Pro Plan, Scooter has been not doing well. After eating he will drool a lot and then vomit. After that he acts fine. This has happened many times and I took him to the vet. They said he might be allergic to chicken and to feed a food with fish as the main ingredient. The vet also told me that he doesn’t like Artemis or any of those types of dog foods because they are too high in protein and he has seen several dogs develop kidney failure from it. He told me to stick with Pro Plan. He feeds his dogs Science Diet, but he said that Pro Plan would be his next choice. Should I keep trying with the Artemis or try something else? But, is Pro Plan really all that bad? Scooter does really good on it. His skin is very nice, has never had any stomach upset on it, the vet has told me that his heart is very strong and healthy, he has never been sick until I’ve started trying other dog foods, his teeth look wonderful, and he loves Pro Plan Sensitive Skin & Stomach. So, what is so bad about it?