Is It Safe to Dress Up Your Dog for Halloween? Vets Weigh In

Are Pet Halloween Costumes Safe?GETTY IMAGES (BACKGROUND); ISABEL/ADOBE STOCK PHOTO (DOG); DANIELLE CARSON/AI (TACO COSTUME). - Hearst Owned

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Who can resist a pup dressed as a taco or a cat sporting bat wings? Unfortunately, not all pet costumes are a sweet idea—some can stress out or even scare your pet.

“The top concerns [for pet costumes] are fit, airflow, and stress,” says Scarlett Magdalen, a veterinarian and the founder of The Regenerative Sanctuary, a holistic veterinary clinic. A costume that’s too tight can restrict breathing, circulation, or movement, and one that’s too loose can snag on furniture or outdoor hazards.

A safe costume should let the pet sit, lie down, climb stairs, and move comfortably with nothing blocking their vision, compressing their ears, restricting their breathing, or changing how they walk. “The best costume is one your pet can happily forget they’re wearing,” says veterinarian Jeff Feinman, author of Path to Pet Wellness.

Dig into the details

Buttons, bells, bows, plastic gems, and dangling ribbons can become choking hazards. Skip masks, which can interfere with vision and restrict airflow, and avoid overly tight elastic bands. Many inexpensive costumes are made from synthetic fabrics that trap heat or irritate sensitive skin—choose breathable materials without strong chemical odors, and make sure the costume isn’t flammable. A trial run several days before Halloween can show you how your pet reacts to wearing the costume.

Watch for signs of stress

Watch your pet’s body language while they are in costume. Indications of stress can include panting, lip licking, pacing, flattened ears, crouching, trying to remove the costume, and freezing in place. “Cats and dogs should not be forced to ‘get used to’ a costume they’re actively resisting,” says Magdalen. Feinman encourages pet parents to watch an animal’s BEAM—behavior, energy, appetite, and mood. A pet who suddenly seems withdrawn, restless, or uninterested in treats may be communicating discomfort.

Don’t dress just any pet

Not every pet is a good candidate for a costume. Flat-faced breeds such as pugs and Persian cats are especially vulnerable because of their existing breathing challenges. Pets who are older, recovering from illness, or highly anxious may also be more comfortable without costumes. They can still join the fun by, for instance, wearing a Halloween-themed bandana or posing with a pumpkin.