What to do right now
- Move your pet away from the candy and pick up everything that is left, including wrappers.
- Gather the bags and wrappers. Count what is left to estimate what is missing. Missing wrappers may mean they were swallowed too.
- Check labels for chocolate type, xylitol (also listed as birch sugar, birch extract, or wood sugar), raisins, nuts, and THC.
- Note your pet's weight and the time it happened.
- Call your veterinarian or an animal poison control center, even if your pet seems normal. Do not make your pet vomit unless a professional tells you to.
Which Halloween treats are dangerous, and which calculator to use
Pet Poison Helpline reports a sharp increase in calls around Halloween, with chocolate topping the list. Use this table to find the right calculator for what your pet ate. If your pet ate several different things, run each calculator and tell poison control about all of them, because the risks add up.
| Halloween item and what to use | Main concern |
|---|---|
| Chocolate bars, cups, and baking chocolate Chocolate calculator | Theobromine and caffeine. Darker chocolate is more dangerous. Signs can take hours to appear. |
| Sugar-free candy, gum, mints, "keto" candy Xylitol calculator | Xylitol can cause a sudden drop in blood sugar and liver failure in dogs. Acts fast. |
| Mini raisin boxes, chocolate-covered raisins, trail mix Grapes and raisins calculator | Raisins can cause kidney failure in dogs. No known safe amount. |
| THC gummies, edibles, infused chocolate Marijuana and THC calculator | Often mistaken for regular candy. Edibles can also contain chocolate or xylitol. |
| Candy and cookies with macadamia nuts Macadamia nut calculator | Weakness, wobbliness, and vomiting in dogs. Often combined with chocolate. |
| Wrappers, foil, lollipop sticks Call your vet now | Can cause a bowel blockage that may need surgery. |
| Candy corn, gummies, hard candy, caramels in large amounts Call your vet if a lot was eaten | Not toxic on their own, but a large amount of sugary or fatty candy can cause pancreatitis 2 to 4 days later. |
| Glow sticks and glow jewelry (mostly cats) Call your vet or poison control if signs continue | Very bitter liquid causes drooling, foaming, and mouth irritation. Not usually life-threatening. |
| Lilies in fall bouquets (cats) Lily calculator for cats | True lilies and daylilies can cause kidney failure in cats. Pollen and vase water count. |
| Batteries in light-up decor, costume beads and bells, moldy pumpkins Call your vet or poison control now | Chewed batteries can burn the mouth and gut. Small metal pieces can contain zinc or lead. Moldy pumpkins can cause tremors and seizures. |
This table summarizes the sources listed below. It is not a ranking of what is "safe." Any candy or decoration your pet eats is worth a call to your vet or a poison control line.
Start with the chocolate calculator. It is the most common Halloween call.
Symptoms to watch for after a candy raid
- Vomiting or diarrhea
- Restlessness, racing heart, tremors, or seizures (chocolate)
- Weakness, wobbliness, or collapse (xylitol, THC, macadamia nuts)
- Not eating, belly pain, or lethargy (raisins, pancreatitis)
- Not pooping or straining to poop (swallowed wrappers or sticks)
- Heavy drooling or foaming at the mouth (glow sticks)
Some problems show up hours or days later, so a pet that seems fine right after eating candy can still need care.
Halloween dangers for cats
Cats eat candy less often than dogs, but chocolate still affects them, and their small size means less is needed to cause concern. Cats are the most common glow stick chewers. Ribbon, string, and costume ties can cause a dangerous string-type blockage if swallowed. Lilies in autumn arrangements are an emergency for cats: call right away for any contact.
Halloween night safety checklist
- Keep candy bowls and trick-or-treat bags in closed containers up high, not on coffee tables or the floor.
- Check kids' candy hauls for chocolate, sugar-free candy, raisins, and anything that could be an edible, and ask kids not to stash candy in their rooms.
- Put pets in a quiet room or crate during trick-or-treating so they cannot slip out the door.
- Make sure ID tags and microchip details are current.
- Keep candles, jack-o'-lanterns, glow sticks, and battery-powered decor out of reach.
- Only use pet costumes that do not limit sight, movement, or breathing, with no small parts to chew off. Never leave a costumed pet alone.
- Throw out carved pumpkins before they mold.
- Save both poison control numbers in your phone tonight.
Planning ahead for Thanksgiving and December? See the holiday pet hazards guide.
For the rest of the year, use the room-by-room pet poison-proofing checklist.
Detailed guides for the most common Halloween poisonings
Frequently asked questions
What Halloween candy is toxic to dogs?
The biggest concerns are chocolate (especially dark and baking chocolate), sugar-free candy and gum that contain xylitol, raisins (including chocolate-covered raisins), and THC edibles that look like regular candy. Large amounts of any sugary or fatty candy can cause pancreatitis, and swallowed wrappers can cause a bowel blockage.
My dog ate a fun-size chocolate bar. What should I do?
Note your dog's weight, the type of chocolate, and how many pieces are missing, then use the chocolate calculator and call your vet or a poison control line. Risk depends on chocolate type, amount, and your dog's size, so there is no single number of fun-size bars that is okay.
My dog ate candy wrappers. Is that dangerous?
It can be. Foil, cellophane, and lollipop sticks can cause a bowel blockage that may need surgery. Count what is left to estimate how many wrappers are missing, and call your vet. Watch for vomiting, not eating, lethargy, or straining to poop.
Is candy corn bad for dogs?
Candy corn is not toxic, but it is almost pure sugar. A few pieces may upset the stomach, and a large amount can cause vomiting, diarrhea, or pancreatitis, which can show up 2 to 4 days later. Call your vet if your dog ate a lot.
My cat bit a glow stick. What should I do?
Glow stick liquid tastes very bitter and can cause heavy drooling, foaming, and mouth irritation. It is not usually life-threatening. Wipe the fur and mouth area and call your vet or a poison control line if signs do not settle or your cat swallowed pieces.