On Friday the 13th, it may not be black cats, but cows that will be spotted around Arlington.

As part of Cow Appreciation Day on July 13, Chick-fil-A will give away free meals at their many locations in the Washington metro region, including the restaurant located inside Ballston Common Mall.

Customers who come to the restaurant dressed “head-to-hoof" in a cow costume will receive a free meal. Any guests who wear "at least a few spots" will be eligible for a free entree.

The promotion will be ongoing throughout the day and customers can claim their free meal or entree during breakfast, lunch or dinner. For more information on Chick-fil-A's Cow Appreciation Day celebration, check out their website.