Choose a Barkings Heads & Meowing Heads voucher code that suits you. Click on "Get Code" and copy the promo code to your clipboard. Go to the Barkings Heads & Meowing Heads website and navigate to your shopping cart. Double check your shopping cart and identify the products you have purchased. Find the promo code box, paste your code and click apply. Check your final price before completing checkout. The final discount should be reflected in your order total.