Here are some of our best dog Halloween costumes that you and your pooch will love. Christmas Dog Costume Is anything cuter than a pooch in a Christmas get-up? Pretty Dog Halloween Costumes for Sale. Now, free costumes and wigs are offered for cosplay talents (see detailed information in the sponsor program). When you are all ready to rock your Halloween costume party, green arrow costumes it is time you gear your attention towards your little pooch.