This Halloween, go trick-or-treating with your costumed canine companion! Your four-legged friend will really get into the Halloween spirit wearing any of the chilling and thrilling dog costumes available online at petco.com. This year's dog Halloween costumes feature a variety of characters and personalities from pirates and princesses to heroes and devils. All of our pet costumes come in a wide range of sizes (many with X-Small or X- Large sizes available), or they are designed to be one size fits most. Some dog Halloween costumes, like the Petco Hot Dog Halloween Dog Costume, are designed as a single fitted piece for your dog to wear around his body. Others, like the Petco Pumpkin Halloween Dog Costume, are made with a body outfit and separate coordinating headpiece. With such a great selection of festive dog costumes available, you are sure to find something fun that both you are your dog will love!