Dog Chocolate Calculator & Toxicity Guide

While there are many human foods that can be safely fed to our four-legged friends in small doses, chocolate unfortunately is not one of them. It is toxic to dogs. Chocolate ingestion can result in vomiting, diarrhoea, or even seizures. In severe cases, chocolate toxicity can be fatal.

If you suspect your dog has ingested chocolate, please contact your nearest Sydney emergency vet immediately for medical advice.

The effect of your dog eating chocolate is determined by a few main factors:

There is a chemical in chocolate called theobromine, which is similar to caffeine, and is highly poisonous to dogs.

Different types of chocolate contain different amounts of theobromine. However, the general rule is that the more bitter the chocolate, the higher the toxicity to your dog.

White chocolate has the least at around 0.25 mg per 28 grams of chocolate

Milk chocolate contains 44–58 mg per 28 grams of chocolate

Dark chocolate contains between 130–450 mg per 28 grams of chocolate

Treatments can vary depending on the amount of chocolate that your dog has eaten. However, if treated early, the first step is to induce vomiting and try to block absorption of the theobromine in your dog’s body.

Depending on the severity of the poisoning, it may be necessary to administer intravenous fluids to help flush out your pet’s system.

An easy way to prevent poisoning is to store all chocolate securely, preferably in closed cupboards or sealed containers that your dog can’t access. Avoid leaving it on benches, coffee tables, or anywhere your dog could sneak a bit.

It’s also important to teach kids why chocolate is dangerous for pets and make sure everyone in the household stays alert — especially during high-chocolate seasons like Easter, Halloween, and Christmas, when treats are often left within reach.

If you think your dog has eaten chocolate, take these steps straight away:

1. Confirm what’s missing: Check the packaging or leftovers so you know exactly what type of chocolate was involved and roughly how much your dog could have eaten.
2. Use the chocolate toxicity calculator for dogs: Enter the chocolate type, amount, and your dog’s weight to calculate chocolate toxicity in dogs​ and get an instant risk estimate.
3. Keep your dog calm: Limit activity and monitor them while you organise the next steps.
4. Call Sydney Animal Hospitals: Share the details you’ve gathered so our veterinary team can tell you whether your dog needs urgent treatment or monitoring.
5. Follow your vet’s instructions: This may include bringing your dog straight in, watching for specific symptoms, or preparing for prompt treatment on arrival.
   

At Sydney Animal Hospitals, your pet’s safety is always our top priority.

Whether you're seeking urgent advice or treatment for chocolate toxicity, or coming in to find out more about pet poisons in general, we’re here to guide you with clear answers, support, and the expert care your dog needs.

Our compassionate and highly experienced Sydney vets assess and treat chocolate toxicity with precision and care, using modern diagnostic tools, proven treatment methods, and close monitoring to ensure your dog receives the best possible outcome.

Remember to always take chocolate toxicity seriously