Personalised Mobile Vet · Pet health tools
Dog chocolate
toxicity calculator.
Dog found the chocolate? Estimate their exposure, then get advice on what to do next.
Contact your vet or the Australian Animal Poisons Helpline. Don’t wait for symptoms or a calculator result. If your dog is shaking, having a seizure, struggling to breathe or collapsing, go to an emergency vet immediately.
PMV: 0478 027 533. If we’re unavailable, contact an emergency veterinary clinic. Suspected poisoning may need hospital care.
Estimate the exposure
For dogs only. Use kilograms and grams.
This is an estimate, not a diagnosis or a safe-dose guide. Product concentrations and individual responses vary. Other ingredients and swallowed wrappers may cause harm even when the estimated chocolate dose is low.
What to do next.
A few useful details can help your vet assess the situation.
Put the chocolate away.
Keep your dog away from any remaining chocolate. Save the packet and ingredient list.
Note what happened.
Have your dog’s weight, the product, the amount missing and the approximate time eaten ready when you call.
Speak to a professional.
Call your vet or 1300 869 738. Don’t try to make your dog vomit or give home remedies unless a vet or the helpline directs you.
Know what to look for
Chocolate poisoning in dogs.
Chocolate contains theobromine and caffeine. Dogs process these differently from people, and their heart and nervous system can be affected.
- Vomiting or diarrhoea
- Restlessness, panting or increased thirst
- A racing or irregular heartbeat
- Tremors, weakness or seizures
Signs can take hours to appear. Looking well now does not rule out poisoning. Contact a vet promptly after an exposure.
Common questions
A little more guidance.
How much chocolate is toxic to a dog?
There is no single amount that applies to every dog. Body weight, chocolate type, quantity and individual sensitivity all matter. Use the estimate to help your conversation with a vet, never to decide that treatment is unnecessary.
Is dark chocolate worse than milk chocolate?
Usually, yes. Dark chocolate, unsweetened baking chocolate and cocoa powder generally contain more methylxanthines than milk chocolate. Concentrations still vary between products.
What if my dog ate white chocolate?
White chocolate has very little methylxanthine content, but its fat and sugar can still cause illness. Other ingredients or packaging may also be a concern. Ask your vet for advice.
What if I don’t know how much they ate?
Call your vet or the Animal Poisons Helpline with whatever information you have. Keep the packaging and describe how much might be missing. An uncertain amount cannot give a reliable calculator result.
Should I make my dog vomit?
Only if a vet or the Animal Poisons Helpline specifically tells you to. Don’t use salt, peroxide or other home treatments on your own.
How this calculator works
Estimated dose (mg/kg) = chocolate eaten (g) × estimated methylxanthines (mg/g) ÷ dog’s weight (kg). Reference values: white 0.04; milk 2.3; standard dark 5.6; unsweetened baking 15.5; dry cocoa powder 28.5 mg/g. For a plain dark bar with a known cocoa percentage, the estimate is 15.5 × cocoa % ÷ 100 mg/g.
General reference bands: below 20 mg/kg; 20–<40 mg/kg (clinical signs possible); 40–<60 mg/kg (heart effects possible); 60 mg/kg and above (seizures possible). These are not safety cut-offs. Symptoms override any calculated band. This tool does not account for other ingredients, medical history, multiple exposures or treatment already given.
References: MSD / Merck Veterinary Manual · Cornell University · Animal Poisons Helpline
Care at home. When it’s the right care.
Personalised Mobile Vet provides home visits across Brisbane, Ipswich, Logan and Moreton Bay. Poisoning may require urgent hospital treatment; please call for advice before arranging a home visit.