oh girl, you just don't change foods on a dog like that.. any sudden changes in food will upset the most balance tummy..
, you could had chosen ANY food in that store and you would PROBABLY had the same results.. I am so sorry your pup is sick, I hope he is better soon.For next time food changes are done slowly over a period of at least two weeks.. I always have an emergency food bag at home, you never know.. specially my pups eat Innova and only one store carries it here, so I make sure I am always a bag ahead..
hugs,
Carmen in nj