A new leash on life $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". A new leash on life quantity Add to cart SKU: 891. Categories: Pets, Women. Tags: art cards, art greeting cards, dog cards, dog greeting cards, Pets cards, Pets Greeting cards, unique cards, unique greeting cards. Related Products Beyond Words $20.00 Give your dog a throne $20.00 Cat & Snow $20.00 Velo Dogs $20.00