After we lost our other dog last year from a lot of health issues we decided when we got a new dog that we would do things differently. We have done A TON OF HOMEWORK on food and treats and ingredients. We decided that we wanted to go with not only grain free but something with a lot of protein. After a lot of research we decided to go with Acana brand. This is the second flavor we have tried and the pups love it and have had no side effects.