Guide · Emergency tool

Chocolate Calculator for Dogs

Has your dog got hold of chocolate? Enter the weight, type of chocolate and amount. The calculator estimates the poisoning risk based on the theobromine content. It does not replace a veterinary examination, but it helps you assess the situation quickly.

Dog's weight15 kg
Type of chocolate200 mg/100 g
Amount eaten50 g
Low risk

7 mg theobromine / kg body weight

Total amount of theobromine ingested: 100 mg

According to current knowledge, no poisoning is to be expected with this amount. Still, observe your dog and offer fresh water.

Call the practice: 05306 / 5722841 To the emergency service

This calculator provides a rough guide based on average theobromine values. The actual content varies depending on the product. When in doubt, the rule always applies: better to seek veterinary advice once too often than once too rarely.

Why is chocolate toxic for dogs?

The culprit is theobromine, a natural ingredient of the cocoa bean that is closely related to caffeine. Humans break theobromine down quickly. Dogs can only do so very slowly: in dogs the half-life is around 17 hours. As a result, the substance accumulates and affects the heart, nervous system and muscles.

The higher the cocoa content, the more theobromine the chocolate contains. Dark chocolate, couverture and cocoa powder are therefore considerably more dangerous than milk or white chocolate.

How the calculator determines the risk

The calculator first determines the total amount of theobromine ingested and divides it by the dog's body weight:

Theobromine dose (mg/kg) = (amount in g × theobromine per g) ÷ weight in kg

The result. The dose in milligrams of theobromine per kilogram of body weight — is compared with recognised toxicological threshold values:

  • below 20 mg/kg: low risk — usually no signs of poisoning.
  • 20 to 40 mg/kg: mild poisoning possible — primarily gastrointestinal symptoms.
  • 40 to 60 mg/kg: moderate poisoning — the heart and circulation can also be affected.
  • from 60 mg/kg: severe poisoning — from about 100 mg/kg there is a danger to life.

For the quick selection, the tool works with average theobromine values: white chocolate approx. 2 mg/100 g, milk chocolate approx. 200 mg/100 g, semi-sweet approx. 500 mg/100 g, dark chocolate approx. 800 mg/100 g and cocoa powder or baking chocolate up to approx. 1,600 mg/100 g. The real content varies depending on the manufacturer and cocoa content.

Symptoms of chocolate poisoning

The first signs usually show within two to four hours. Watch out for:

  • vomiting and diarrhoea,
  • marked restlessness, panting and trembling,
  • increased drinking and urination,
  • a fast heartbeat and cardiac arrhythmias,
  • in severe cases seizures, unconsciousness and a danger to life.

What to do if your dog has eaten chocolate?

  1. 1

    Remove the chocolate

    Clear away all reachable remains immediately and stay calm.

  2. 2

    Determine the type and amount

    Keep the packaging. The cocoa content and weight are decisive for the assessment.

  3. 3

    Assess the risk

    Enter the weight, type and amount into the calculator above.

  4. 4

    Call the practice

    In the case of a medium or high risk, contact the veterinary practice or the emergency service immediately, with the weight, type, amount and time.

  5. 5

    Observe the dog

    Watch for vomiting, restlessness, a racing heart and trembling. Never induce vomiting yourself without veterinary instruction.

FAQ

Chocolate and dogs — good to know.

At what amount is chocolate toxic for dogs?

What matters is not the amount of chocolate itself, but the ingested theobromine dose per kilogram of body weight. From about 20 mg per kg, mild symptoms are possible; from around 40 to 60 mg per kg, severe poisoning is a risk. Dark chocolate and cocoa powder can therefore be dangerous even in small amounts.

How quickly does chocolate poisoning show?

The first symptoms usually appear within two to four hours, but can show up to twelve hours after ingestion. Because theobromine is broken down only slowly, the symptoms can last for one to three days.

Is white chocolate also toxic?

White chocolate contains practically no theobromine, so classic theobromine poisoning is unlikely. The problem here is rather the high fat and sugar content, which can trigger gastrointestinal upset or pancreatitis.

Should I make my dog vomit?

Never induce vomiting on your own initiative. Whether this is sensible and safe depends on the timing and the dog's condition and is decided by the vet. When in doubt, call first.

Does the calculator also apply to cats?

Theobromine is toxic for cats as well, although cats very rarely eat chocolate. The calculator is designed for dogs. If you suspect that a cat has ingested chocolate, please contact a veterinary practice directly.

If poisoning is suspected

Unsure? It is better to call us once too often.

If chocolate poisoning is suspected, every minute counts. We will help you over the phone and tell you whether your dog should be brought in.

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