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Just because your dog claimshe thinks ghosts are totally made up doesn't mean he wouldn't want to dress up like one for Halloween. Get your canine pal ready for the spookiest holiday with the perfect costume.

Petco has you covered: buy two and get one free on select Halloween costumes, toys, and treats for dogs and cats. (This offer ends 10/3—for ongoing deals and updates, check out Petco Bootique for other costumes, as well as the Petco Halloween Treats and Toys and Petco Halloween Shop.

Bootique Dog Park Shark Costume

Prepare to hum the theme from Jawsevery time you take your pal for a spin this fall. With this shark costume, even the smallest of pups can be the scariest creature in the dog park.

DC Comics Justice League Superman Dog T-Shirt With Removable Cape

Got a super dog? Just kidding, we know — all dogs are super dogs! But not all dogs have a cape to prove it. Make sure your super dog has the Superman costume to match.

Bootique Tasty Taco Dog Costume

Some people might say it's rude to dress up your pup as a delicious food item she would love to eat. We're not some people. Dogs look great in a taco suit.

Bootique Marvel Groot Dog Costume

I'm Groot! (Translation: Your dog can become your favorite plant-based superhero with this cute Groot costume.)

Bootique Teddy Bear Dog Costume

Who's cuter: a teddy bear or your dog? Don't answer. In fact, prove you don't have to settle—have the best of both worlds with this teddy bear costume.