Who said Halloween is only for kids? Fido and Fluffy want in on the action, too. That’s why we’re running a contest to find photos of the most festive, ghoulish, and spooky pets dressed for the occasion.

To enter, send a photo of your pet in costume by noon on Friday, October 23. All of the entries will be compiled into a slide show, but our pet-loving editors will pick the finalists. Then we’ll open it up to our readers to pick the winners.

Be sure to include your name, phone number, e-mail address, and place of residence along with a sentence or two about your pet and the costume. Photos should be 300 dpi and at least four by six inches. And remember, you need to live in Washington—including the Maryland and Virginia suburbs—to qualify.