Make sure your dog has a costume, too. On Halloween, dress up your dog in the Pink Ribbon Pet Costume as a way to support breast cancer and look absolutely adorable. The pink ribbon is a tunic designed to fit most dogs. The satin pink ribbon fits over the head and then secures under the belly. Your dog, boy or girl, will love being part of the festivities on Halloween, and this costume doesn’t cause a lot of fuss. Simply strap it on before you head out the door to go trick or treating, or let your canine companion help hand out candy to all of the little trick or treaters that come up to the door.