Hi Dogs4Life! I don't know of a good reduced calorie food but just wanted to relay my experience with my overweight nonpoodle (GSD). I've never had an overweight dog before so when Rex gained about 10 lbs this year I was surprised. He is so fluffy it is hard to tell. He is 6 years, and the vet did a full bloodwork panel at his yearly exam. It came back showing hypothyroidism which is apparently very common in dogs. The vet said he would never lose the weight without taking the hormone medication. I did not see any other symptoms besides the weight gain this year. Once on the medication daily he has lost the weight with a small decrease in his same food. Anyway just something to think about. Hope you find a solution!