Search Menu

Dear Dr. Klein,
Halloween is right around the corner, and as an experienced veterinarian, I suspect you’ve seen all manners of Halloween hazards for dogs. I’ve heard that chocolate or candy containing artificial sweeteners can be dangerous for dogs. Can you please explain why these are dangerous and provide a list of other Halloween Safety tips I can share with my friends and family?

Having spent most of my career as an emergency room veterinarian at one of the largest emergency hospitals in the country, I appreciate that you want to raise awareness for the many risks Halloween can pose to dogs. Each Halloween, veterinary clinics care for dogs (and cats) that have gotten into trouble on and around Halloween – and there many ways for dog owners to take precautions.

Keeping Halloween Treats & Candy From Your Dog

Many of the food and treats we enjoy on Halloween are toxic to dogs, and some can be deadly. Unlike cats, who tend to be picky eaters, many dogs will eat anything – including the wrapper in which the treat is stored. The treats below are especially dangerous to your pets, so be sure to keep them out of reach.

  • ChocolateChocolate consumption in dogs is a top ingestion problem at Halloween. Chocolate contains Theobromine, which can be harmful and sometimes fatal to your dog. Baking chocolate is exceptionally high in this chemical. The general rule of thumb is the darker the chocolate, the more danger it poses. If your pet consumes chocolate, contact your veterinarian,a veterinary emergency center or a pet poison helpline immediately. Quick treatment can minimize the danger to your dog. If your dog also ate candy wrappers or bags, it may present the additional problem of intestinal blockage. So, be sure to let your veterinarian know what was consumed.
  • Candies and Gum – The biggest concern with candy is the risk of the ingredient xylitol. Xylitol is a sugar alcohol commonly used as an artificial sweetener. Xylitol is toxic to pets. This ingredient is often used in sugar-free items but has been showing up in more and more foods every day even when they are NOT labeled as sugar-free. Most often, xylitol is found in sugar-free gum, sugar-free candy, and sugar-free baked goods. It is sometimes found in toothpaste and peanut butter as well.
  • Hard Candies – Hard candy can also present a problem for dogs. Large quantities of hard candies and gum can clump up in the stomach and cause a risk of obstruction.
  • Raisins – Some Halloween treat-givers often choose to pass out small boxes of raisins. This option is great for children, but raisins and grapes are dangerous to dogs and can cause renal failure. Be sure that you keep raisins out of your dog’s reach at all times. If your dog consumes raisins, please call your veterinarian or veterinary emergency center immediately. Prompt action can be helpful in reducing the risk to your pet.
  • Candy Wrappers – Toxicity with candy is not the only concern, the wrappers can also be an issue, as they can become lodged in your pet’s throat or intestinal tract, requiring surgery to remove. Wrappers that are foil or cellophane have the potential to result in gastrointestinal irritation.

If you’d like to give your dog a special treat this Halloween, consider making your own pumpkin dog treats.

Golden Retriever wearing a Halloween headband ready to trick or treat.

Halloween Costume and Decor Dog Safety


The trend of dressing dogs in costume has increased over the years. It is quite simple to find costumes created specifically for pets, however, that does not necessarily ensure their safety. Beads, snaps, buttons, ribbons, elastic and fabric can all be intestinal hazards. Never purchase costumes for pets that have dangling parts or pieces that can be chewed off. In addition, costumes on your pet can result in overheating, impaired vision, and even difficulty breathing if it covers the face or is too restrictive around the pet’s neck or chest. Never leave your dog unattended while he’s wearing clothing or other decorative items. If you decide to dress your dog up this Halloween, be sure to check out these safety tips before making or purchasing any costume for your dog.

Glow Sticks and Glow Jewelry

Glow sticks are a fun Halloween trend and can help keep humans a little safer in the nighttime, but for dogs and cats, these items look like toys. Glow-in-the-dark items are filled with a liquid that if punctured, will leak the glowing content which if ingested, causes mouth pain, irritation, and excessive salivation.

Candles, Flashlights and Battery-Operated Décor

The fact that this holiday is primarily celebrated at night means greater use of candles and battery-operated decorations. Use candles with care. Wagging tails and sniffing noses can land on flames that may result in injury and burns. Keep all battery-operated toys and decor out of reach from curious pets, as they can be chewed or ingested resulting in a visit to the emergency veterinarian clinic.


Even the best-behaved dogs can become skittish or overwhelmed. Know your dog and watch their body language to decide if he’s best tucked away in a crate or a quiet room as opposed to joining the family for Trick-or-Treating, greeting the costumed neighbors or participating in a Halloween party. To prevent your dog from running out, make sure he is under control as you open the door for trick or treaters.

Safety First

Walk your dog while it is still light out, if possible. Your dog may find candy, wrappers, and broken eggs on lawns and streets. Make sure that these tempting treats stay out of reach. Don’t leave your dog unattended outside on Halloween, even if he is behind a fence.

Not only can pranksters target family pets, but all the activity and commotion can increase your dog’s stress levels unnecessarily. Also, well-meaning neighbors may give unwanted treats
to your dog.

We wish you and your dog a happy and safe Halloween!

Related article: We Tried 6 Dog Halloween Costumes From Chewy — Heres What We Thought
Get Your Free AKC eBook

What to do if your pet goes missing?

If the unthinkable were to happen, are you prepared? Download this e-books to learn what steps to take if your dog goes missing.
*Turn off pop-up blocker to download
*Turn off pop-up blocker to download