My 5 yr old Boston ate grain-free food his entire life until the last few months when I switched him to Weruva Caloric Harmony with Venison from Wellness Core Low Cal and it even has fewer calories than the Wellness, though a little bit more fat. Now I can’t keep him from gaining weight. I haven’t changed anything else and use low fat treats as well. He has gained between 1/2 and one pound and nothing I do seems to get him back down to the 19 pounds the vet says is desirable. Can this change be the reason? Should I get him back onto a low callorie grain free food kibble.
