For those unable or unwilling to go whole, uh... "cow," you can still score a complimentary entree for partially dressing in cow attire (such as "such as a cow-spotted scarf, purse, tie, hat or other accessory").
For additional details, you can check out Chick-fil-A's Cow Appreciation Day website here. The site also has printable costume pieces and the details on a "best cow costume photo" contest for prizes.
