Why is Chocolate Bad for Dogs?

3. How Much Chocolate is Dangerous?

The amount of chocolate a dog can consume without serious consequences depends on their size. Toxicity can start at around 10mg per pound of body weight. Regular milk chocolate contains around 100mg of theobromine in 2.5 ounces or three squares. In a small dog weighing pounds, this is enough to cause toxicity, though it may only cause minor discomfort to a larger breed. There are chocolate toxicity calculators available on the internet, but it is safest to check with a vet if unsure.