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Don't Mix Chocolate with Pets This Holiday Season
Dec 13 2019

This Holiday Season----No Chocolate for Your Pet

For people, a chocolate bar can send our taste buds to heaven. But for dogs and cats, consuming even a little bit of chocolate could send them to the emergency room.

Chocolate can cause serious illness in pets because it contains theobromine and caffeine. Theobromine and caffeine are chemicals called methylated xanthine alkaloids. While not harmful in small amounts in humans, these compounds can be deadly in dogs and cats.

Your browser may not support display of this image. The compounds in chocolate are harmful to pets because they stimulate the sympathetic nervous system, commonly known as the "fight or flight" branch of the nervous system. Stimulation of the sympathetic nervous system causes the body to release a chemical called epinephrine (also commonly known as adrenaline), allowing humans and animals to have the ability to react in potentially harmful or emergency situations.

However, toxic doses of methylxanthines lead to the over-stimulation of this system, as a result, a pet that ingests a harmful amount of methylxanthines may breathe rapidly and become very restless and overheated. A pet's heart rate and blood pressure may increase drastically, possibly culminating in cardiac arrhythmias (an abnormal heartbeat). They may also vomit, have diarrhea, and drink and urinate more than usual. Ingesting chocolate could ultimately lead to seizures or even death without appropriate veterinary care.

The symptoms that will occur in your pet will depend on several factors: the type of chocolate ingested, the amount ingested, the weight of your pet, and your pet's health history. The concentration of methylxanthines vary by the type of chocolate, ranging from the least in white chocolate up to the most in cocoa powder:

"White chocolate          Semi-sweet chocolate

"Milk chocolate            Instant cocoa mix

"Dark chocolate           Baking chocolate

"Cocoa beans              Cocoa powder

(Note: cocoa bean mulch, a commercial product for gardens, is very harmful if ingested by pets)

Of course, the more chocolate your pet ingests, the more likely you are to see significant symptoms. If your pet has ingested a toxic dose of chocolate, your veterinarian will recommend treatment options that take into consideration the amount and type of chocolate ingested as well as the health history of your pet. One option is to induce vomiting to remove some of the chocolate from your pet's stomach before it is digested; however, this can cause more problems for your pet if not done correctly, so it should not be done without instruction from a veterinarian.

Your veterinarian may also need to treat your animal with a substance called activated charcoal, which prevents the intestines from absorbing the methylxanthines. Treatment with intravenous fluids and medication to prevent seizures and the adverse effects on the heart may also be needed.

If you suspect that your pet may have ingested chocolate or another product that contains methylxanthines, it is better to err on the side of caution and treat the situation as if it were a worst-case scenario. Even if you do not see any changes in your pet's behavior, you should contact your local veterinarian to determine whether any type of treatment is necessary.

For further information on chocolate toxicity, please contact your veterinarian.

© Copyright 2011, University of Illinois, College of Veterinary Medicine

Julia Disney

Information Specialist

Office of Public Engagement



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