Hi Scyllarus –
Buffalo and beef are two completely different proteins, so just because he has a sensitivity to beef doesn’t mean he will with buffalo. Be aware though, the Merrick “buffalo” formula is really a poultry (chicken/turkey) based food – there’s very little buffalo in the formula. As for the gas on the Newman’s, there’s a possibility it could be due to the vegetable gums. Vegetable gums are used as thickeners and gelling agents in most canned foods. Most are moderately to rapidly fermented by intestinal bacteria and gas can be a side-effect.
