Can dogs eat
Chocolate?
No
No. Chocolate contains theobromine and caffeine, which dogs clear slowly, and it can cause vomiting, tremors, abnormal heart rhythms and seizures.
Why it’s unsafe
Chocolate comes from cocoa beans, which contain compounds called methylxanthines. The two that matter are theobromine and caffeine. The Merck Veterinary Manual reports that theobromine is present at roughly 3 to 10 times the concentration of caffeine, and that dogs clear both slowly (a half-life of about 17.5 hours for theobromine), so they build up and overstimulate the nervous system and the heart.
The darker and more bitter the chocolate, the more methylxanthine it holds. Cocoa powder and unsweetened baking chocolate are the most dangerous, semisweet and dark chocolate come next, milk chocolate has far less, and white chocolate has a negligible amount.
Merck reports that mild signs such as vomiting, diarrhea and extra thirst can appear from about 20 mg/kg of methylxanthines, effects on the heart from roughly 40-50 mg/kg, and seizures at about 60 mg/kg or more. Severe signs and death can occur at lower doses, and small dogs reach these figures on very little chocolate. Chocolate candy and baked goods may also contain macadamia nuts, raisins or xylitol, which add separate dangers.
Work out how risky a specific amount is with our chocolate toxicity calculator, then call a vet or poison line either way.
Risks
- Vomiting, diarrhea and increased thirst
- Restlessness, panting, a racing heart and abnormal heart rhythms
- Muscle tremors and seizures at higher doses
- Signs usually begin 6 to 12 hours after eating and can last up to about 72 hours in severe cases
- Cocoa powder, baking chocolate and dark chocolate are the most dangerous
What to give instead
Do not feed chocolate in any form. If your dog likes sweet treats, offer something made for dogs, such as a few blueberries or a small slice of banana, or a commercial dog treat, keeping treats within 10% of daily calories.
Store chocolate, cocoa powder and baked goods well out of reach, especially around holidays. See our Halloween safety tips for keeping candy away from dogs.
Related forms
| Food | Verdict | Why |
|---|---|---|
| Dark and baking chocolate | No | Highest methylxanthine content, so the most dangerous per gram. |
| Milk chocolate | No | Lower in methylxanthines but still a risk, especially for small dogs or larger amounts. |
| White chocolate | No | Negligible methylxanthines, but still not a food for dogs; check with your vet if your dog ate some. |
| Cocoa powder | No | The most concentrated source of methylxanthines. |
If your dog already ate it
Treat any chocolate eaten as worth a phone call, especially dark chocolate, baking chocolate, cocoa powder, or any amount eaten by a small dog.
- Note what was eaten, roughly how much, the type of chocolate and when, plus your dog's weight.
- Call your vet, an emergency clinic, or ASPCA Animal Poison Control (888) 426-4435 / Pet Poison Helpline (855) 764-7661 (US; fees may apply). Outside the US, call your local emergency vet.
- Follow their advice. Do not try to make your dog vomit at home; whether and how to do that is a decision for a vet.
Watch for vomiting, restlessness, rapid breathing, a fast or irregular heartbeat, tremors or seizures. Signs usually begin 6 to 12 hours after ingestion, so do not wait for symptoms before calling.
Frequently asked questions
How much chocolate is toxic to a dog?
It depends on the chocolate type and your dog's weight. Darker chocolate is far more potent than milk chocolate, and small dogs are affected by smaller amounts. Use the chocolate toxicity calculator as a guide and call a vet or poison line.
Is a small piece of milk chocolate okay?
It is never a safe treat. Because the risk depends on your dog's size, ask a vet or poison line rather than guessing.
Why is chocolate poisonous to dogs but not people?
Dogs clear theobromine and caffeine slowly, so the compounds linger and build up in the body.
How soon do symptoms appear?
Merck reports signs usually begin 6 to 12 hours after ingestion and, in severe cases, may last up to 72 hours. Call for advice as soon as you know your dog ate chocolate.
Can dogs eat brownies or chocolate cake?
No. Baked goods containing chocolate carry the same risk, and may also contain macadamia nuts, raisins or xylitol, which add other dangers.
Written from veterinary sources by the Pawsplained editorial team. Not yet reviewed by a veterinarian; this is general information, not a diagnosis or treatment plan. Updated Oct 25, 2026. Editorial policy