from the dog health hub
Can Dogs Eat Chocolate? No. Here's What the Dose Really Means
No. Chocolate contains theobromine, which dogs metabolise far more slowly than we do. Darker chocolate carries much more of it, so a small square of dark can matter more than a whole milk-chocolate bar, and how much matters depends heavily on your dog's size.
Why not
Theobromine (and the caffeine alongside it) overstimulates a dog's heart and nervous system. Dogs clear it so slowly that it builds to toxic levels at doses a human would barely notice.
Concentration is everything. Cocoa powder and dark chocolate contain roughly ten times the theobromine of milk chocolate, while white chocolate contains almost none (though its fat and sugar can still upset a stomach). A labrador stealing one milk-chocolate button is a very different event from a chihuahua eating half a bar of 85 percent dark.
What to do if your dog has eaten chocolate
- Work out what was eaten: type of chocolate, rough amount, and your dog's weight.
- Ring your vet with those numbers. They can calculate whether the dose is worrying. The Veterinary Poisons Information Service also runs an owner line (Animal PoisonLine).
- Signs usually appear within 2 to 12 hours: restlessness, vomiting, a racing heart, panting, tremors. Severe cases can seizure.
- If a worrying dose has gone in within the last couple of hours, your vet may induce vomiting. Do not attempt this at home unguided.
When to ring the vet
ring your vet if
Restlessness or unusual excitability · Vomiting or diarrhoea · Fast breathing or a pounding heart · Twitching or tremors, which mean emergency care now
Frequently Asked Questions
My dog ate chocolate cake. Same risk?
Usually less theobromine than the equivalent weight of chocolate, but ring your vet with the details anyway, especially for small dogs, rich dark-chocolate cakes, or cakes containing raisins or alcohol.
Is white chocolate safe then?
It contains negligible theobromine, so poisoning is unlikely, but it is essentially sugar and fat, which can still trigger an upset stomach or, in prone dogs, pancreatitis. It is not a treat worth sharing.
How long until my dog is out of the woods?
Theobromine takes a long time to clear. Most dogs who show no signs within 24 hours are fine, but follow your vet's advice on monitoring.
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Open the Dog Health Hub →This article is for information, not diagnosis. If your dog has eaten something worrying, ring your vet or, out of hours, an emergency vet. Every dog is different, and your vet knows yours.