#5 Baked Tuna Hearts
Use canned tuna, form it into little hearts and bake in the oven until warm for heart-shaped treats your cat will love. You can even mix in a little catnip for extra oomph. Just remember that, as with anything, these treats should be given in limited quantities. Large amounts of fat, sugar, or any food your cat is not used to getting can lead to vomiting, diarrhea, or indigestion.