Calculating Chocolate Dangers in Dogs 

People regard chocolate as a sweet treat. But it can be dangerous and even deadly if eaten by dogs.

Identifying Risk Factors

The size of the dog plus the type of chocolate play factors in health risks. 

  • Size of the dog:  small dogs who eat chocolate are more impacted than large dogs.
  • Type of chocolate: Dark chocolate, baking chocolate and cocoa powder is more toxic for dogs than milk chocolate or white chocolate. That’s because those types contain higher levels of theobromine and caffeine. 

Theobromine is a chemical found in cocoa beans that acts as a stimulant when consumed. In people, theobromine is safe because our liver enzymes safely break it down. But dogs lack efficient liver enzymes to break it down. Also, theobromine can stay in a dog’s body for up to 72 hours, reaching toxic levels.

Theobromine can impact a dog’s heart, central nervous system, muscles and kidneys. 

Fortunately, in a matter of seconds, you can calculate those risks using what’s known as a dog chocolate toxicity calculator.

Popular Chocolate Toxicity Calculators

Here are three of the most popular sites offering free toxicity calculators:

Here’s how these calculators work: You enter your dog’s weight, estimated ounces of chocolate consumed and type of chocolate.  I decided to test these calculators.  So, I created a scenario in which my 40-pound dog, Kona, ate chocolate using the PetMD calculator. Here are the findings I received within 5 seconds:

Scenario 1: Kona ate 2 ounces of milk chocolate. 

dog eats chocolate

Findings: Woo-hoo! We don’t expect to see symptoms in your dog but continue to monitor. Her. Contact your veterinarian if she shows any signs of tremors, seizures, hyperactivity or fast heart rate.

Scenario 2: Kona ate 2 ounces of dark chocolate.

Findings: Uh-oh! Your pet may need medical attention. Monitor your dog closely for these symptoms: GI upset, vomiting and shaking. 

Scenario 3: Kona ate 4 ounces of dark chocolate.

Findings: Ouch! Your pet may need medical attention if she displays these symptoms: vomiting, GI upset, hyperactivity, hypertension and restlessness. 

Next Steps to Aid Your Dog

  1. Contact your veterinary clinic or the nearest veterinary emergency clinic. Or call either the ASPCA Poison Control Hotline (888 426-4435) or Pet Poison Helpline (855 764-7661). Both are staffed 24-7 by board-certified veterinary toxicologists. 
  2. Describe the type and estimated amount of chocolate your dog ate.
  3. Report symptoms you see in your dog.
  4. Follow the instructions from the veterinarian. 

Final advice: practice safety prevention. Make sure to store chocolates in kitchen drawers, refrigerators and pantries that are not accessible to your dogs. 

Learn more

You can learn more on ways to keep your cats and dogs safe by visiting https://www.protrainings.com/courses/pets. Consider taking our veterinarian-approved online pet first aid/CPR course. Enter this code: CPR – ARDEN MOORE and receive a 10 percent discount! And, if you are interested in becoming a Pro Pet Hero instructor, please click on the BECOME AN INSTRUCTOR button on the home page for more details.

Arden Moore

Written by:

Arden happily wears many "collars" in the pet industry. She is a certified master first aid/CPR instructor since 2011, the best-selling author of more than two dozen dog and cat books, an in-demand presenter at pet events, and host of the award-winning Oh Behave Show on Pet Life Radio - the longest-running weekly pet podcast. She joined the ProTrainings team in 2018 when they launched the pet first aid/CPR instructor program. Since that time, she has trained about 500 Pro Pet Hero Instructors from all over North America. She teams up with her therapy pets -- Pet Safety Dog Kona and Pet Safety Cat Casey. Together, this trio teaches the latest, veterinarian-approved pet first aid in a practical, fun way. Arden strives to live her motto: "bringing out the best in pets...and their people." Arden enjoys road trips with her pets, trying new recipes, playing cornhole, and doing ink crossword puzzles.