If your dog needs to shed a few pounds, no salt canned, or fresh washed green beans, and pumpkin puree are great tasting and low- calorie foods that will add flavor and fun to your dog's meal.
The amount will vary depending on the size of your dog. Our big Lab got a 1/2 a can of green beans or a 1/3 of a can of pumpkin over his dinner. He loved it and hardly noticed that we cut back on his regular food.
As always you should discuss and dietary changes with your veterinarian, and always talk to your veterinarian if your dog gains or loses weight quickly. There could be a medical reason.