Chocolate is poisonous to dogs; however, the hazard of chocolate to your dog depends on the chocolate type, the amount consumed and the dog’s size. In large enough amounts, chocolate and cocoa products can kill your dog.
Why not chocolate?
A single piece of chocolate should not be a problem. A single piece doesn’t contain a large enough theobromine dosage to harm your dog; however, if you have a small dog that has eaten a box of chocolates, you need to go to the veterinarian immediately.
Different chocolate types have different theobromine levels. Cocoa, cooking chocolate and dark chocolate contain the highest levels, while milk chocolate and white chocolate have the lowest. If you’re dealing with any quantity of dark or bitter chocolate, err on the side of caution. The high level of theobromine in dark chocolate means it takes only a very small amount to poison a dog. Less than an ounce of dark chocolate may be enough to poison a 44-pound dog.
The usual treatment for theobromine poisoning is to induce vomiting within two hours of ingestion. If you are worried that your dog may have eaten a large quantity of chocolate, call San Bruno Pet as soon as possible.