Jack, my 7 yr. old Basenji seems to keep putting on weight. We currently have him on Royal Canin, skin something prescription food, it's main ingredient is fish meal. Our vet suggested it, because he is a very allergic dog. First we had him on skin formula and I noticed in six weeks his weight went from 25lbs. to 30lbs. We reduced the amount, he didn't lose weight and then we reduced the amount again. Currently he is on 1/2 Cup and he still isn't losing weight. I walk him most mornings for an hour and try and limit any other treat he gets. Occasionally he gets pizzles. My vet is at a loss and I am at a loss. His thyroid seems good no problems there. Does anyone have any ideas? Also he is on a medication called Cyclosporin for his allergies….