Chocolate contains a chemical called theobromine, which is poisonous to dogs. Use a chocolate toxicity calculator for dogs to work out whether your dog has eaten a potentially toxic amount.
Chocolate poisoning mainly affects the heart, central nervous system and kidneys. Symptoms of dogs eating chocolate usually occur between four and 24 hours after your dog has eaten chocolate.
The effect and signs of chocolate poisoning in dogs depends on the amount eaten and the size of the breed. For example, a Labrador-sized dog that’s eaten 200g of milk chocolate is likely to have a stomach upset such as vomiting and diarrhoea. At 500g, it’s likely that cardiovascular problems and increased heart rate will be seen. Eating 750g may result in seizures.
Use a chocolate toxicity calculator for dogs to work out whether your dog has eaten a potentially toxic amount. Simply click the button below to open the calculator and get an assessment.