Our guide explains the risks, symptoms to watch for, and what steps to take in an emergency.

What makes chocolate toxic to dogs?
- Caffeine
- Theobromine
While humans can safely process these compounds, dogs (and cats) metabolise them much more slowly. This means the chemicals stay in their system longer, increasing the risk of toxic effects. And this is why, chocolate is toxic to dogs.
What is Theobromine?
Different types of chocolate contain different levels of theobromine:
- Dark chocolate & baking chocolate – highest levels (most dangerous)
- Milk chocolate – moderate levels
- White chocolate – very low levels (but still not safe)
Even small amounts can be harmful, especially in smaller pets. The more chocolate consumed, the greater the risk of severe illness, or even death if left untreated.
Symptoms of Chocolate Toxicity in Dogs
- Increased heart rate
- Vomiting
- Diarrhoea
- Restlessness
- Nervousness or agitation
- Hyperactivity
- Trembling or shaking
- Increased thirst
- Increased urination
- Seizures
If you notice any of these signs, seek veterinary care immediately.
What to do if Your Dog Eats Chocolate.
- Contact your vet immediately if your pet has eaten (or may have eaten) chocolate
- Provide details such as your dog’s size, the type of chocolate, and how much was consumed
- Follow your vet’s advice closely
If your regular vet is closed, reach out to a 24/7 emergency veterinary clinic.
Prevention is Protection
- Keep chocolate stored securely and out of reach
- Remind guests (especially children) not to feed pets chocolate
- Be extra cautious during holidays like Easter and Christmas when chocolate is more accessible

Written by We Love Dogs Care Team
Our passionate resort carers, Doggy Doaters, and canine specialists dedicated to providing 7-star boutique dog boarding, health care, and advice in Melbourne.