Not all candy is equal. A couple of milk chocolate minis and a box of raisins are very different problems, and the sugar-free stuff is the one that surprises people. Here is how to tell what you are dealing with.
Figure out what was eaten and roughly how much, then call your vet or a pet poison line. Anything with raisins and anything sugar-free (xylitol) is an emergency in any amount. Dark, baking, and cocoa-heavy chocolate is more dangerous than milk chocolate, and white chocolate barely counts. Gather the wrappers so you can read the labels, and do not make your dog vomit unless a vet tells you to.
Hotline hours and fees from ASPCA12 and Pet Poison Helpline.13 Your own vet or local emergency clinic is always a good first call too.
Every family with a dog and kids has a version of this story. The costumes come off, the pillowcases get dumped on the living room floor for the big candy trade, somebody goes to get a drink, and the dog does what dogs do.
It happens enough that Pet Poison Helpline says calls rise 12 percent during Halloween week, making it their busiest time of the year, and chocolate is consistently their number one call.3 4 The good news is that plenty of candy raids end with nothing worse than an upset stomach. The trick is knowing quickly which ones do not.
Raisins or chocolate-covered raisins. Sugar-free candy, gum, or mints (xylitol). Baking chocolate or cocoa powder.
Dark or semisweet chocolate, and milk chocolate in larger amounts or for smaller dogs. Wrappers eaten along with the candy.
White chocolate, and plain sugary candy like gummies or hard candy. A big haul of anything fatty can still cause pancreatitis days later.
Those little boxes of raisins the health-conscious house on the corner hands out? For dogs, they are one of the scariest things in the bag.
For years nobody knew why grapes and raisins damage dogs' kidneys. Using its own case data, ASPCA Animal Poison Control identified tartaric acid as the likely culprit. The amount in grapes ranges from 0.35% to 2%, which is why a few raisins can hurt one dog while a handful seemingly spares another.7 Merck notes that more than one grape or raisin per 10 pounds of body weight may already pose a risk.8 Vomiting or diarrhea can start within 6 to 12 hours, and kidney injury within 24 to 72 hours.8
Because the dose cannot be predicted for any given dog, the only safe move is to treat any raisin ingestion as serious. Chocolate-covered raisins are a double problem.
If there is one ingredient to check every wrapper for, it is this one. Xylitol is a sweetener used in sugar-free gum, candy, mints, some chocolate bars, and even some peanut butters. The FDA notes it can also be listed as birch sugar or wood sugar.6
In people it is harmless. In dogs it triggers a flood of insulin and a crash in blood sugar, sometimes within 10 to 60 minutes.6 Merck puts the threshold for low blood sugar at about 100 mg per kilogram, and severe liver failure becomes possible above 500 mg/kg.5 Liver damage can take 24 to 48 hours or more to show, even though it has already started.5
Watch for: vomiting, weakness, staggering, collapse, or seizures.6 If you find an empty pack of sugar-free gum, do not wait for any of these. Call right away.
Chocolate contains theobromine and caffeine, which dogs process far more slowly than we do. The Merck Veterinary Manual puts mild signs at around 20 mg per kilogram of body weight, heart effects at 40 to 50 mg/kg, and seizures at 60 mg/kg and above.1 How much of that is in the candy depends almost entirely on the type.
| Chocolate | Per ounce | Can cause signs in a 20 lb dog | Can cause signs in a 50 lb dog |
|---|---|---|---|
| White chocolate | About 1 mg | Not realistic | Not realistic |
| Milk chocolate | About 64 mg | About 3 oz | About 7 oz |
| Dark or semisweet | 150 to 160 mg | About 1.2 oz | About 3 oz |
| Baker's chocolate | About 440 mg | Under half an ounce | About 1 oz |
| Cocoa powder | About 807 mg | A fraction of an ounce | Under an ounce |
Pet Poison Helpline gives a similar example: a 50 pound dog can be sickened by about one ounce of baker's chocolate, while it can take up to eight ounces of milk chocolate.3 If you want to run your own numbers, Merck links a chocolate toxicity calculator.2 Then call anyway. The calculator is a starting point for the conversation, not a replacement for it.
Signs usually show up within 6 to 12 hours.1 14 Early on you will see thirst, vomiting, diarrhea, and restlessness. In more serious cases that progresses to hyperactivity, tremors, a racing heart, seizures, and high body temperature. Severe cases can last up to 72 hours.1
Most dogs do not unwrap their candy first. Pet Poison Helpline warns that foil and cellophane wrappers can cause a life-threatening bowel obstruction that may need surgery.3 Cornell's veterinary college lists vomiting, loss of appetite, belly pain, diarrhea, dehydration, and lethargy as the signs of an obstruction.9 Lollipop sticks and hard candy sticks belong in the same category.
Then there is the high-fat, high-sugar overload itself. A big candy binge can trigger pancreatitis, which is painful and can be serious, and it may not show up until two to four days later.3
Glow sticks and glow jewelry deserve a mention too, especially if you have a cat who likes to chew. Pet Poison Helpline says the liquid causes frothy drooling, retching, and vomiting, and a swallowed plastic casing can cause an intestinal blockage.11
We are, professionally, the people who see what comes out the other end. After a candy raid it is common to find bits of foil and colored wrapper in the yard over the next few days. If you see that, mention it to your vet, and watch closely for the obstruction signs above, especially straining with little or nothing coming out.
If you want a refresher on what normal looks like, our guides to reading your dog's poop and stool consistency are good bookmarks for the whole candy season, which, let's be honest, runs straight through to New Year's.
On our weekly visits, each Dooty Report notes things like blood, mucus, unusual color, and undigested material, so you are not the only one keeping an eye on things while the Halloween stash slowly disappears.
The short version: read the wrappers. Raisins and sugar-free mean call now. For chocolate, darker and smaller dog means more danger. When in doubt, call, because the only thing scarier than a Halloween vet bill is waiting too long to make the call.
It depends on the type of chocolate and your dog's weight. Merck puts mild signs at about 20 mg of theobromine and caffeine per kilogram. Pet Poison Helpline's example: about one ounce of baker's chocolate, or up to eight ounces of milk chocolate, can sicken a 50 pound dog. Dark chocolate and cocoa powder are the most dangerous, and white chocolate has very little.
For most medium or large dogs, a single milk chocolate piece is unlikely to cause more than a mild upset stomach, but small dogs have much less margin. Check the wrapper for dark chocolate or xylitol, weigh your dog, and call your vet or a poison line to be sure.
Signs of chocolate poisoning usually appear within 6 to 12 hours and can last up to 72 hours in severe cases. Xylitol can work much faster, sometimes within 10 to 60 minutes, though signs can also be delayed for hours.
Yes, if it contains xylitol, which may also be listed as birch sugar or wood sugar. Xylitol can cause a dangerous drop in blood sugar and, at higher doses, liver failure. Treat any xylitol ingestion as an emergency.
No safe amount is known. The likely toxin, tartaric acid, varies widely from one raisin to the next, so toxicity cannot be predicted. Merck notes that more than one grape or raisin per 10 pounds of body weight may pose a risk. Call a vet for any raisin ingestion.
Only if a veterinarian tells you to. The ASPCA says hydrogen peroxide is the only method that can be used safely at home, and only under a vet's guidance. Never use salt, olive oil, or ipecac, and never give hydrogen peroxide to a cat.
We are a pet waste and pet care company, not a veterinary practice. This article is general information checked against the sources above. For anything involving your own pet, call your veterinarian.
Candy season is long. We scoop weekly and note anything that looks off in your Dooty Report, so you have a second set of eyes on the yard from Halloween through the holidays. Weekly plans are $99/mo (monthly visits start at $49), month-to-month, cancel anytime.
See Scooping Plans → Curious what we track? Meet the Dooty Report.