Bella and Ripley eat Eukanuba. One of the poodles that I had years before had a bit of a "gas problem" and the vet suggested Eukanuba. After introducing her to the Eukanuba the problem vanished. We have kept with it ever since. When Ripley came to live with us about 6 weeks ago he, too, had some gas problems. It only lasted a few days so I am assuming his old food was the culprit. A few days on the Eukanuba and no gas.