Chocolate contains Theobromine, which dogs can't digest. Use this tool to instantly calculate the toxicity level based on your dog's weight and the amount consumed.
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Because chocolate toxicity affects the nervous system and heart, symptoms usually appear within 6 to 12 hours after ingestion. The severity depends on the type of chocolate and the dog's size.
If you notice any of these signs, do not wait. The sooner treatment is started, the better the prognosis.
The main toxic component in chocolate is Theobromine, a compound similar to caffeine. Humans metabolize theobromine easily, but dogs process it very slowly. This allows it to build up to toxic levels in their system, overstimulating their central nervous system and heart.
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Baking chocolate and cocoa powder are the most dangerous because they are highly concentrated. White chocolate contains almost no theobromine and poses a very low poisoning risk, though the fat and sugar can still cause pancreatitis.
If you get to the vet early (often within 1-2 hours of ingestion), they may induce vomiting to remove the chocolate from the stomach. Activated charcoal might be administered to absorb any toxins remaining in the intestines.
In more advanced cases, supportive care is necessary, including IV fluids to flush the toxins and medications to control heart rate or seizures. Most dogs recover well with prompt treatment.
Generally, it is safer to have a vet perform this. Hydrogen peroxide is sometimes used, but the dosage is critical and can cause severe stomach ulcers if done incorrectly. Always call your vet first.
For a medium to large dog, likely not. However, for a very small dog (e.g., a 2kg Chihuahua), even small amounts can be concerning. Use the calculator above to be sure.