When you spend 15 dollars on any Petsmart purchase you can receive a free gift or toy. Use the code MAYDEAL. You will need to enter your petsperk card as well.
Also, "Who Said Nothing is Free" is reporting that Publix has a flier for Michael's chef creation canned dog food. One of the coupons would get you a free can. For more details go here.
If you can find it, this would work great with the buy one/get one coupon from the inserts a few weeks back. If you were lucky enough to find the 2 pack at Target with the free coupon insert you could get two cans for free, or more depending on your coupons.