Starve a Cold, Feed a Retreiver $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". Starve a Cold, Feed a Retreiver quantity Add to cart SKU: 347. Categories: Hearts, Humor, Pets. Related Products The Beet Grows On $20.00 Heart at Work $20.00 A Delicious Day to Remember $20.00 I Love You from the Bottom of My Heart $20.00