Give your dog a throne $20.00 Inside Message Blank Inside Packages of Heartstrings® cards are shrink-wrapped and sold in sets of 10 cards with envelopes. The actual card size is 4 1/4" x 5 1/2". Give your dog a throne quantity Add to cart SKU: 900. Category: Pets. Related Products Starve a Cold, Feed a Retreiver $20.00 Fetch Your Sticks $20.00 Bone Appetit $20.00 Listen to your heart $20.00