We highly recommend not going above this amount for either puppy or adult.
Another option is canned pumpkin. If you opt for this, it would be instead of the Grape Nuts and NOT in addition to. It, as with the cereal, has a nice sweet flavor and most Yorkies love either option. For this fruit, you will want to add 1 teaspoon for a puppy or 2 teaspoons for an adult into each meal OR your particular Yorkie may enjoy simply eating this by itself....
We have found that ours have been very happy to lick it right off of the spoon as they found it to be very tasty.
Canned pumpkin (pure pumpkin, the kind used in pies) is an excellent source of fiber that can make your dog regular again, plus most dogs seem to really enjoy it. Try mixing a a teaspoon or two into your dog's food, or just let her lick it off the spoon.