Everything you need to know about chocolate toxicity and dogs

Sharing may be caring, but to almost every rule, there is an exception. Chocolate and dogs are a prime example. This Easter, be sure your furry friend watches the Easter egg hunt from the sidelines because chocolate is toxic to dogs. 

Here’s what you need to know about chocolate toxicity and dogs.

White shaggy dog with paw up. Woman holding box of chocolates wagging finger at dog.

What is it about chocolate that is toxic to dogs?

Caffeine and a chemical called Theobromine are both found in chocolate, making it toxic for pets and humans. Dogs and other pets are sensitive to these chemicals because they cannot metabolise them. Theobromine influences dogs’ central nervous system, heart and kidneys, leading to potentially serious health effects if ingested like heart failure and the development of seizures. On the other hand, humans have a much higher tolerance for these chemicals and do not need to worry about chocolate poisoning. 

Can chocolate be lethal to dogs?

Chocolate can be lethal to dogs, but this is rare. Factors such as the size of the dog, the type of chocolate and the amount consumed all determine chocolate’s level of toxicity. Some dogs are more vulnerable than others. Those that are older or that have existing medical conditions are more likely to have serious consequences from consuming chocolate.

Why are dogs attracted to chocolate?

Unlike cats, dogs aren’t picky eaters and tend to eat anything that they find whether that’s a dog treat, your dinner or a box of chocolates. This is why it’s important to keep all chocolate safely hidden.

What chocolate is worse for dogs?

The higher the Theobromine content, the worse the chocolate is for dogs. White chocolate has the lowest concentration of Theobromine followed by milk chocolate - these are the least toxic. Bitter and darker chocolates have more Theobromine, while baking chocolates and cocoa powder are the most Theobromine-rich and the most harmful. 

What chocolate is safe for dogs?

While some chocolates are worse than others, no chocolate is safe for dogs. Chocolate cakes and ice creams can contain theobromine too, as well as sugars and fats that are unhealthy for dogs. Whether it be raw chocolate of any kind or chocolate flavoured ice cream or cake, it should always be kept away from your pet.

How long will it take for chocolate to affect a dog?

Symptoms of chocolate poisoning in dogs usually emerge from 1 to 4 hours after consumption. This varies according to the dog’s metabolism and how much they ate or drank on the day they ingested the chocolate.  

What are the symptoms of chocolate poisoning in dogs?

Since theobromine affects multiple key organs, there are many symptoms of chocolate poisoning in dogs. These include:

  • Vomiting

  • Diarrhea

  • Restlessness 

  • Excitement 

  • Nervousness 

  • Excessive thirst and urination 

  • Trembling and muscle tremors 

  • Increased heart rate

  • Seizures 

How long does chocolate toxicity last in dogs?

Symptoms of chocolate toxicity in dogs can last for up to 72 hours or about three days. 

What should I do if my dog has eaten chocolate?

If you suspect that your dog has eaten chocolate you should call the vet immediately. Be sure to take note of what type and how much chocolate they ate. If the vet thinks there is a danger of toxicity, you should bring them to the vet straight away. Their first step will usually be to safely induce vomiting. Depending on your dog’s symptoms, additional treatments may be needed. These may include flushing out their stomach, giving them fluids through a drip or putting them on medication that prevents seizures and regulates their heart rate.  

Many foods are toxic to dogs (and cats), so read up on these and ensure your pets can’t access them. 

If you’re concerned that your dog has eaten chocolate, give us a call on (03) 9842 5330 to get advice from an experienced vet in Melbourne.

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