When my big-o puppy stopped growing enough to finally just get one meal a day, she started getting an afternoon snack to take the edge off her hunger badness. When I prepare her dinner - a few spoons of wet food, with 2 cups of dry, I fill her Kong too - using dry dog food, peanut butter, a couple of little carrots, and maybe a treat on the end. I layer it inside, using dry pellets first, then some peanut butter, more dry food, a little more peanut butter, more food, then squeeze carrots in for some resistance to keep her from licking everything out too easily. I use carrots half the time when giving her treats too. They're easy to buy, and cheap considering the price of most pet treats, that are just filled with crap! The Kong canned treat stuff is sooo expensive, so even though I don't eat the stuff myself, I tried regular canned cheese and find it works okay for her. I use it instead of peanut butter every other week or so for variety. Always be sure to keep an eye on your dogs bowel movements too, to be sure nothing is messing with her stomach.