I found this in the latest issue of Family Dog and thought it was the cutest!

http://highhopesforpets.com/shop/products/birthday_cupcakes_six_pack/

Price: $9.99 plus shipping

• Add milk or water, your love & bake for 10 minutes.
• Everything's included: Cake and frosting mix, mini baking cups and decorating tips.
• Developed by a Pet Nutritionist.
• Made with only the best human food-grade ingredients.