The symptoms of chocolate toxicity can range from mild diarrhea and vomiting to seizures and death. The severity of the symptoms depends upon the amount and type of chocolate ingested. The toxicity levels are as follows:
Milk Chocolate: Mild signs at 0.7 oz per pound of body weight; severe toxicity at 2 oz per pound of body weight. In other words, one pound of milk chocolate can cause severe signs in a 20 lb dog.
Semi-sweet Chocolate: Mild signs at 0.3 oz per pound of body weight; severe toxicity at 1 oz per pound of body weight.
Baking chocolate: This one is the most toxic and can cause severe symptoms with as little as 2 small 1 oz squares.
In most cases, you will only see mild symptoms of chocolate toxicity, such as vomiting, diarrhea, or fever. However, if enough is ingested, it could cause severe symptoms, such as muscle spasms, rapid breathing, increased heart rate, seizures, coma, and cardiac arrest.
It is extremely important to keep chocolate stored away from pets. If you know your dog has ingested chocolate, then keep in mind the above information when determining whether or not your pet will require veterinary attention. If it is just a piece or two of milk chocolate, then be prepared for some mild diarrhea. On the other hand, if your dog ingested an entire bar of bakers chocolate, then you will need to seek veterinary attention. If you are in doubt about the need to seek medical attention, then call your veterinarian and follow their advice.