Thank you! Seriously. If you want to give your pet a thrill, make some yogurt (all I have is goat) and liver Royal Icing:
1/2 cup Potato Starch
1/2 TBS plain yogurt
1/2 TBS pureed liver
Mix well, then add a little more yogurt/liver stirring well after each addition until you reach the desired consistency.
Downside, if you don't have a dehydrator to put it in after icing the cookies, you have to throw it into the oven between 150-170° for a couple of hours until completely dry. OR keep it in the fridge for up to 5 days.