Foods made for cats are formulated to contain the vitamins, minerals, and amino acids a cat needs for good health, so “people food” should be a minimal part of your cat’s diet. For an occasional delicacy, you might try small bits of cheese or cooked tuna, chicken, fish, or liver.
Small amounts of fresh veggies including carrots, green beans and broccoli are crunchy (good for canine teeth), nutritious and low calorie. Green beans will give your dog a dose of iron and vitamins. You may want to cook before serving, though they are typically considered safe to eat raw.