Reviewed by Renee Schmid DVM, DABT, DABVT · Last updated: October 2026
Chocolate, sugar-free candy containing xylitol, raisins, candy wrappers, and glow sticks are common Halloween hazards for pets . Halloween pet safety starts with knowing where these hazards hide. Calls to Pet Poison Helpline® increase the week of Halloween, chocolate ingestions topping the list.
“Each year, we experience a sharp increase in calls around Halloween,” said Dr. Renee Schmid, a senior veterinary toxicologist and director of Veterinary Medicine at Pet Poison Helpline. “Most often, these calls involve pets accidentally ingesting Halloween candy or décor.”
If your pet got into something they shouldn’t, our toxicology experts are available 24/7 at 855-764-7661.
Halloween Candy Danger Chart for Dogs & Cats
| Item | Danger level | Why | Learn more |
| Dark or baking chocolate | 🔴 High | Theobromine + caffeine | Is chocolate poisonous to dogs? |
| Sugar-free candy & gum (xylitol) | 🔴 High | Low blood sugar, liver failure | Is xylitol poisonous to dogs? |
| Raisins (including chocolate-covered) | 🔴 High | Kidney failure | What happens if a dog eats raisins |
| Marijuana edibles / THC gummies | 🔴 High | Often mistaken for regular candy | My dog ate an edible |
| Milk chocolate candy bars | 🟠 Moderate | Risk depends on amount and pet size | Chocolate toxicity calculator |
| Wrappers & lollipop sticks | 🟠 Moderate | Bowel obstruction | See wrappers section below |
| Candy corn, Starburst, gummies, Skittles | 🟡 Lower | Sugar and fat can cause pancreatitis | Candy corn, Starburst |
| Glow sticks & glow jewelry | 🟡 Lower (most calls involve cats) | Mouth irritation, drooling | Glow jewelry |
Chocolate: Our #1 Poisoning Call, Year After Year
Chocolate has been the most common call to Pet Poison Helpline for more than a decade, and dogs make up about 95% of those calls. Many dogs are drawn to its smell and taste. Cats tend to be pickier eaters, but chocolate is still toxic to them.
Interestingly, Halloween isn’t our busiest chocolate holiday; Christmas is. However, Halloween candy often sits in bowls and trick-or-treat bags for days, giving pets plenty of chances to find it.
The darker the chocolate, the greater the concern. Chocolate contains theobromine and caffeine stimulants that pets process much more slowly than people do, and darker varieties contain more of both. From most to least concerning:
- Baking chocolate and cocoa powder
- Semi-sweet chocolate
- Dark chocolate
- Milk chocolate
- White chocolate (very little theobromine, but the fat can still upset the stomach)
How much is too much? It depends on the type of chocolate, the amount ingested, and your pet’s weight.Therefore, there’s no single “safe” number of fun-size bars. To understand the level of concern, use our chocolate toxicity calculator, then call us for an expert assessment specific to your pet and their exposure.
Symptoms to watch for:
- Vomiting and diarrhea
- Increased thirst and urination
- Restlessness or agitation
- Rapid heart rate or abnormal heart rhythm
- Tremors, and in severe cases, seizures
Signs may not appear for several hours, so a dog who seems fine may still need care from a trusted veterinary professional. High-fat chocolate can also trigger pancreatitis, a painful inflammation of the pancreas, even when theobromine levels are low.
Be sure to check the ingredient list for further potential toxic exposures. Things like chocolate-covered raisins, macadamia nuts, espresso beans, xylitol, and THC edibles all add risk. Learn what to do if your dog ate chocolate.
Sugar-Free Candy, Gum & Xylitol
Xylitol is a sugar substitute that is highly toxic to dogs. It consistently ranks among our top ten toxins, and it turns up in places many pet parents don’t expect.
Where xylitol hides this Halloween season:
- Sugar-free gum and mints (some aren’t labeled “sugar-free” at all)
- “Keto,” low-sugar, or diabetic-friendly candy
- Protein bars, energy bars, and some specialty baked goods
Check the label for “xylitol,” “birch sugar,” “birch extract,” or “wood sugar.”
Why xylitol exposure is an emergency: In dogs, xylitol is absorbed rapidly. It triggers a surge of insulin, which causes a sudden, dangerous drop in blood sugar. Larger exposures can lead to liver failure, and both can be life-threatening. Signs can include vomiting, weakness, wobbliness, and collapse. Symptoms can develop quickly, so call or chat with us right away, even before signs appear.
Cats don’t appear to be affected by xylitol the way dogs are. If you’re unsure, our expert team is always glad to help. Read more about xylitol poisoning in dogs.
Raisins & “Healthy” Trick-or-Treat Snacks
Some families hand out mini boxes of raisins instead of candy, but raisins and grapes are toxic to dogs . There’s no known safe amount, and even a small handful can cause kidney failure in some dogs.
Watch for these other raisin sources in trick-or-treat bags:
- Chocolate-covered raisins, which combine two toxins in one bite
- Trail mix and snack packs
- Oatmeal raisin cookies and baked treats
Symptoms include vomiting, nausea, decreased appetite, lethargy, and abdominal pain. Store raisins as carefully as chocolate, in sealed containers well out of reach. Learn what happens if a dog eats raisins.
Candy Overindulgence & Pancreatitis
Pets rarely stop at one piece of candy. Candies that aren’t toxic on their own can still cause problems when eaten in large amounts, including:
- Candy corn
- Skittles and Starburst
- Gummy bears and gummy worms
- Caramels
- Marshmallows
Large amounts of sugary, high-fat candy can lead to pancreatitis, a painful and potentially fatal inflammation of the pancreas. It may not show up for two to four days, so contact a trusted veterinary professional even if signs are not yet present. Watch for decreased appetite, vomiting, diarrhea, lethargy, and abdominal pain.
A large amount of gummy candy can also pull fluid into the digestive tract, which may lead to electrolyte imbalances.
Wondering about the concerns of a specific treat? See is candy corn bad for dogs and my dog ate Starburst candy.
Candy Wrappers, Lollipop Sticks & Bowel Obstructions
Pets don’t stop to unwrap their candy. Foil, cellophane wrappers and lollipop sticks can cause a life-threatening bowel obstruction that may require surgery to treat.
A helpful self-check: if your dog raided a whole bag of candy, compare what’s left to what was there. Missing wrappers may mean they were swallowed too. This gives you and our team a better idea of what, and how much, your dog ate.
Signs to watch for:
- Vomiting
- Decreased appetite or lethargy
- Not pooping
- Straining to poop
X-rays or other imaging may be needed to diagnose an obstruction.
Halloween Dangers for Cats
Cats get into different kinds of trouble at Halloween. Their curiosity deserves its own plan of action.
Glow sticks and glow jewelry. Pets, especially cats, love to chew on these fun Halloween accessories, and most of our glow-stick calls involve cats. While not usually life-threatening, the liquid inside can cause mouth pain and irritation, along with heavy drooling and foaming at the mouth.
Chocolate. Cats eat chocolate less often than dogs, but theobromine affects them too. Their smaller size means it may take less chocolate to cause concern. Read Can Cats Eat Chocolate?
Wrappers, string, and ribbon. Costume ties, ribbon, and decorative string can become a linear foreign body if swallowed. As the intestines move, the string may stay in place and cut into the intestines, which often requires surgery to treat or remove.
Lilies in fall bouquets. Lilies often appear in autumn arrangements and centerpieces. True lilies (Lilium sp.) and daylilies (Hemerocallis sp.), including Easter, tiger, stargazer, Oriental, Asiatic, roselilies, and daylilies, can cause kidney failure in cats. Every part of the plant is toxic, including the pollen and vase water, and eating less than one petal can be enough. If your cat has any contact with lilies, call or chat with us right away.
Beyond Candy: Costumes, Decorations & Candles
- Costumes: Make sure costumes don’t limit your pet’s vision, movement, or breathing. Small metal pieces like beads, snaps, and bells can contain zinc or lead. If swallowed, they can cause serious poisoning, so check costumes for loose parts and supervise pets while they’re dressed up.
- Fur dye: Even dyes labeled non-toxic for people can harm pets if licked or absorbed. Stick to products made specifically for pets.
- Candles and jack-o’-lanterns: Keep flames away from curious noses and wagging tails.
- Fake cobwebs: Stretchy decorative webbing can tangle around pets or cause a blockage if eaten.
- Dry ice: Keep this material away from pets. Contact with dry ice can cause burns.
- Batteries in light-up décor: Chewed batteries can cause corrosive burns to the mouth and digestive tract. Call right away if your pet ingested a battery.
- Moldy pumpkins: Rotting pumpkins and moldy food can contain mycotoxins that cause tremors and seizures. Throw away carved pumpkins before they spoil.
Halloween Pet Safety Tips (Checklist)
- Store candy out of reach and in closed containers, not on coffee tables or countertops.
- Check kids’ trick-or-treat bags for items toxic to your pets and keep them up and out of reach.
- Ask children to keep candy stashes out of their bedrooms or secured out of a pet’s reach
- Keep pets in a crate or separate room during trick-or-treating to reduce doorbell stress and prevent escapes.
- Make sure ID tags and microchip information are current.
- Read candy labels for xylitol, including “birch sugar.”
- Choose pet-safe costumes, or skip them entirely if your pet seems uncomfortable.
- Keep candles, glow sticks, and battery-powered décor out of reach.
- Throw away carved pumpkins before they mold.
- Save 855-764-7661 in your phone.
Frequently Asked Questions
How can I keep my pets safe during Halloween?
Store all candy in closed containers out of reach, check trick-or-treat bags, and keep pets in a quiet room while visitors come to the door. Keep glow sticks, candles, and costumes with small parts out of reach. Be prepared and save Pet Poison Helpline’s number, 855-764-7661, in case of an emergency.
What should I do if my dog ate Halloween candy?
Stay calm and gather the leftover packaging so you know what your dog ate and roughly how much. Note your dog’s weight and the estimated time that they consumed the candy. Call Pet Poison Helpline at 855-764-7661 or your veterinarian right away, and don’t induce vomiting at home without guidance from a veterinary professional.
What Halloween candy is toxic to dogs?
The Halloween candies with the highest concern for dogs are chocolate (especially dark and baking chocolate), sugar-free candy and gum containing xylitol, raisins, and THC edibles. Large amounts of any sugary or fatty candy can cause pancreatitis, and wrappers can cause bowel obstructions. See our Halloween candy danger chart above for more information.
How long after eating chocolate will a dog show symptoms?
Signs of chocolate poisoning can appear within a few hours, though some dogs don’t show symptoms right away. Early treatment is safer and generally less expensive, so don’t wait for signs to appear. Try our chocolate toxicity calculator and call us for an expert assessment specific to your pet and their exposure.
How long does it take for xylitol to affect a dog?
Dogs absorb xylitol quickly and it can cause a dangerous drop in blood sugar soon after ingestion. Larger amounts can also lead to liver failure. Because it acts fast, treat any xylitol exposure as an emergency and call 855-764-7661 right away. Learn more about xylitol in dogs.
Is candy corn bad for dogs?
Candy corn isn’t toxic to dogs, but it’s made of almost pure sugar. A few pieces may cause stomach upset, while a large amount can lead to vomiting, diarrhea, or pancreatitis. If your dog ate a large amount of candy corn, call us for guidance. Read more about dogs and candy corn.
What Halloween candy is dangerous for cats?
Chocolate is the main candy concern for cats. Wrappers, ribbon, and string can also cause intestinal blockages. Outside the candy bowl, glow sticks and lilies in fall bouquets are top cat hazards. Lilies can cause kidney failure in cats, so call right away with any exposure.
Real Halloween Cases from Pet Poison Helpline
Help Is Always a Call Away
If you think your pet ate something poisonous this Halloween,we recommend seeking help sooner rather than later. It’s often easier, less expensive, and safer to treat pets earlier and before severe symptoms appear.
Our expert team of veterinary professionals handle every species and every type of exposure, 24 hours a day, 7 days a week. A one-time per-incident fee includes all follow-up consultations with you and your veterinarian.
If your pet gets into something, call Pet Poison Helpline 24/7 at 855-764-7661, message us via our website chat, or contact your veterinarian right away.
