Large Dog Halloween Costume Ideas That Actually Fit

What makes a costume work on a big dog

Large dogs are harder to dress than small ones, mainly because sizing runs out. Many costumes are cut for small and medium bodies, so a big dog ends up in a garment that rides up, pinches under the legs or covers only the back. Start with a design that suits a deep chest and long body, then look at how it is made before you look at how it looks.

The AKC says a costume should not be too tight, restrict movement or block vision, and should allow normal breathing and hearing. The ASPCA adds that an outfit must not restrict sight, breathing or barking, and that ill-fitting costumes can twist around the dog and cause injury. If you want to see what is available, browse our large dog Halloween costumes and the wider dog Halloween costumes range.

Costume ideas that suit large dogs

Body-covering ideas tend to work best because a big dog has plenty of back to show them off. A pumpkin sweater, such as this Halloween pumpkin knitted dog jumper, is easy to wear and familiar to most dogs. A spider back piece, like the spider chest-and-back dog costume, turns a large dog into a conversation piece without covering the face. A full animal outfit, such as a tiger pet costume, suits a calm, tolerant dog.

Other easy ideas need very little fabric: a festive bandana, a themed collar or leash, or a cape that fastens at the chest and sits on the back. The AKC notes that a bandana, collar accessory or seasonal leash is often safer than a full outfit, though a bandana should be worn only under supervision because it can catch on objects. If your dog is large, thick-coated or has any breathing difficulty, keep to the lightest option, since costumes can trap heat.

How to measure and size a large dog

Measure three things with a soft tape: chest girth at the widest point behind the front legs, back length from the base of the neck to the base of the tail, and neck size. Compare those numbers with the maker's size chart, because sizes vary between brands and a large label on one chart can be a medium on another. If your dog falls between sizes, choose the one that allows movement without hanging loose, since loose costumes can trip a dog and tight ones restrict breathing.

Check how the costume fastens. Wide hook-and-loop straps or adjustable panels give more room to fine-tune the fit on a deep-chested dog than fixed elastic, which can pinch behind the front legs. Make sure the leg openings do not rub in the armpit area when your dog walks, sits and lies down, not just when it stands.

What to avoid

Skip anything with a headpiece or face covering. The AKC advises avoiding face coverings and dangling decorations, and the ASPCA recommends skipping costumes with headpieces, because they can block sight and hearing. Check for small parts that could come off, such as buttons, gemstones, beads, ribbons and glitter, which can lodge in the throat or gut if swallowed.

Avoid heavy fabric on warm days, long outings in a costume and any outfit your dog fights. Remove the costume right away if your dog freezes, pants, paws at it, flattens its ears or struggles to move, as the AKC describes. Never leave a dog alone in a costume, since it can shift, snag or turn into a chew toy.

Practice, photos and safety on the night

Buy early and practice. The AKC recommends introducing a costume well before Halloween, using treats and short sessions, so the dog can get used to it. Start by letting your dog sniff the costume, reward calm behavior, then put it on for a minute or two and build up. Keep photo sessions short and take pictures early, while your dog is still comfortable.

On Halloween night, the ASPCA suggests keeping most dogs in a separate, comfortable room with a favorite toy during peak trick-or-treating, since crowds and doorbells can stress them. If your dog is out after dark in a costume, keep it on a leash and make sure identification is attached. If you are unsure about a costume or your dog's comfort, ask your vet.

This page is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your dog.