What to Do If Your Dog Eats Chocolate: A Step-by-Step Emergency Plan

The moment you realise your dog has eaten chocolate, two things happen at once: your heart rate doubles, and your ability to think clearly drops. That is precisely when a written plan is worth more than any amount of general knowledge. What follows is an ordered sequence — what to do in the first ten minutes, who to call, what to avoid, and what happens next. Work through it in order rather than jumping ahead.

Minute 0-2: Secure the Scene

Before anything else, separate your dog from whatever is left. Dogs frequently return to finish the job while their owner is on the phone, turning a manageable ingestion into a serious one. Move the remaining chocolate somewhere physically inaccessible — a closed cupboard, not a countertop.

Then preserve the evidence. Keep the wrapper, box, or bag; do not throw it away. The packaging carries the net weight and the cocoa percentage, which are the two figures that determine everything else. If the packaging is destroyed, photograph what remains — including chewed foil, which matters for a different reason we will come to.

Minute 2-5: Gather Three Facts

Every useful decision from here depends on three pieces of information. Write them down; do not rely on memory while you are stressed.

• What type of chocolate. White, milk, semi-sweet, dark, baking chocolate, or cocoa powder. The theobromine concentration differs by a factor of roughly ninety across that range, so "chocolate" alone tells a vet almost nothing.
• How much, by weight. Use the packaging in ounces or grams. If your dog ate part of a bar, estimate the fraction rather than guessing a random number. When you genuinely don't know, assume the worst case — the whole package.
• When it happened. If you witnessed it, note the clock time. If you didn't, work out the widest plausible window ("somewhere between 1pm when I left and 4pm when I got back"). Timing decides whether decontamination is still an option.

Add your dog's current weight if you know it. An estimate from the last vet visit is fine; precision to the pound is not required.

Minute 5-8: Calculate the Dose

Now convert those facts into a number a clinician can act on: milligrams of theobromine per kilogram of body weight. This single figure determines whether you are in a monitor-at-home situation or a drive-to-the-ER situation, and it removes the guesswork that makes chocolate calls so stressful.

Enter the type, the amount, and the weight into the Chocolate Toxicity Calculator and note the result. If you want to understand where the underlying numbers come from, the complete chocolate toxicity guide lists theobromine content by chocolate type and explains the thresholds.

Minute 8-10: Make the Call

Call your own veterinarian first during opening hours; they have your dog's history. Out of hours, call the nearest emergency clinic. In parallel, or if you cannot reach a clinic, use a dedicated poison service staffed by veterinary toxicologists:

• ASPCA Animal Poison Control Center: (888) 426-4435, 24/7. A consultation fee applies and a case number is issued that your vet can reference.
• Pet Poison Helpline: (855) 764-7661, 24/7, also fee-based, with follow-up guidance included.

Lead with the facts: breed and weight, chocolate type and amount, time of ingestion, your calculated mg/kg figure, any symptoms already present, and any existing medical conditions or medications. A caller who opens with "22 kg Labrador, 100 g of 70% dark, about 40 minutes ago, roughly 95 mg/kg" gets a faster and better answer than one who opens with "my dog ate chocolate."

What Not to Do

Well-intentioned home remedies cause a meaningful share of complications, so this section matters as much as the action list.

• Do not induce vomiting on your own initiative. Hydrogen peroxide dosing is easy to get wrong, and vomiting is actively dangerous in a dog that is already tremoring, unsteady, seizing, or brachycephalic (flat-faced), because of the aspiration pneumonia risk. Peroxide can also cause its own gastric irritation and ulceration. Only induce vomiting if a veterinary professional instructs you to, with a dose they specify.
• Do not give salt, mustard, or milk. Salt can cause hypernatraemia, a serious problem in its own right. None of these speed clearance.
• Do not give human medication for the symptoms. Many common drugs — ibuprofen in particular — are themselves toxic to dogs.
• Do not wait for symptoms before acting. Theobromine has a canine half-life of roughly 17.5 hours, so signs lag well behind absorption. The window in which decontamination helps most is the first one to two hours, before the symptoms you are waiting for have appeared. The full symptom timeline is covered here.
• Do not ignore the wrapper. Swallowed foil or plastic can cause an obstruction that requires imaging regardless of the theobromine calculation.

What Happens at the Clinic

If you arrive within about two hours of ingestion and your dog is stable, the vet will usually induce vomiting with an injectable emetic — a far safer and more reliable approach than anything done at home. Activated charcoal may follow to bind theobromine still in the gut; because theobromine undergoes enterohepatic recirculation, repeated charcoal doses are sometimes used.

Beyond that window, treatment is supportive: intravenous fluids to maintain perfusion and promote excretion, beta-blockers or other medications for tachycardia and arrhythmias, muscle relaxants or anticonvulsants for tremors and seizures, and monitoring of temperature, ECG, and electrolytes. High-dose cases are typically hospitalised for 24 to 48 hours because of the slow clearance. Prognosis is excellent for dogs treated early and still good for many that arrive symptomatic — the strongest predictor of outcome is how quickly the owner acted.

Monitoring at Home Afterwards

If the calculated dose was low and your vet advises home observation, keep the dog quiet and indoors for 24 hours, ensure constant access to fresh water, and check on them at least every few hours overnight. Note the time of any vomiting, diarrhoea, pacing, or panting; a written log is far more useful to a clinician than a general impression. Escalate immediately if you see tremors, collapse, a racing or irregular pulse, or a seizure of any duration.

Once the crisis has passed, it is worth auditing the rest of the house. Sugar-free gum and some peanut butters contain xylitol, which acts within 30 minutes rather than hours — the Xylitol Toxicity Calculator covers that risk. Grapes and raisins, common in trail mix and baked goods alongside chocolate, can trigger acute kidney injury; see the Grape & Raisin Toxicity Calculator. A dog that counter-surfs once will do it again.

The Bottom Line

Chocolate ingestion is one of the most common calls animal poison centres receive, and the overwhelming majority of cases end well. The plan is short: secure the remaining chocolate, record the type, amount, and time, calculate the dose, call with that number ready, and leave vomiting to professionals. Act in the first two hours and you convert a potential emergency into a phone call and a quiet evening of watching your dog sleep it off.