Apr 14 2016

Chocolate toxicity – What to Do if The Dog Finds Your Stash

With Easter recently passed, many of us will harbor some leftover chocolate to snack on over the next coming months. Unfortunately, it can be very dangerous for pets. How much is too much and what should you do if your dog eats chocolate?


One of the common questions we receive after a suspected chocolate ingestion is how much is safe? So long as you know how much was eaten and what sort of chocolate it is, it’s relatively easy to work out if your pet is in danger.

The general rule is the darker it is, the more dangerous it is. Dark , bitter baking chocolate can be up to 8 times as toxic as milk chocolate. Milk chocolate is not as toxic as dark chocolate, and white chocolate contains very little of the chemical concern, which is theobromine.

For a great chocolate calculator visit here. Of course, as a disclaimer, this calculator is a simplified tool and does not account for any individual variation in sensitivity. In particular an older pet with a heart condition, pancreatitis or kidney problems could be more sensitive to smaller amounts.

When such calculators work out the toxic dose, it is based on the LD50, or the fatal dose that causes 50% of canine patients to suffer a fatal outcome. So if your pet is even close to the dangerous level, err on the side of caution and get them to the vet as soon as possible.

Other factors that may impact your pet include whether there were any other ingredients such as caffeine, sultanas, macadamias and xylitol (also toxic to pets and used as an artificial sweetener). Many pets are very sensitive to rich and fatty foods and will get a nasty bout of pancreatitis or gastroenteritis from overindulging. Also, pets that gobble the whole lot so quickly that they eat wrappers, foil and plastic are more susceptible to a foreign body problem as well.


chocolate contains theobromine, which is a methylxanthine that stimulates the heart and nervous system while relaxing smooth muscle. The low grade signs such as tremors, seizures, coma and death can occur. Often it takes a few hours to develop the dangerous symptoms and as theobromide has a long half-life it can take a few day for pets to improve even with treatment.


If you have reason to suspect your pet has eaten chocolate, get them to the vet immediately. If there is a chance that the chocolate is still in the stomach, inducing vomiting quickly is cheap, effective and safe. Usually if the consumption was within the hour, inducing vomiting solves the problem, as the chemicals have not had the chance to absorb yet.


If circumstances make it so you can’t get to a vet in the time required, it is possible to induce vomiting without the controlled environment of the pet hospital. Unfortunately, some ways of inducing vomiting are almost as dangerous as the toxin itself, and getting it wrong could put you in an even worse situation. So while we don’t recommend inducing vomit yourself, if it’s what you need to do, here are a few precautions:

– Never try to induce vomiting if your dog is not fully awake and able to swallow properly

-Never induce vomiting in a dog having seizures

-Never induce vomiting if your dog has eaten anything caustic that will cause damage on the way up. If your are unsure, call Poison Control

-Never give salt water or hydrogen peroxide. These can be very dangerous to pets

-Never give anything orally to a vomiting dog

-Never try to get a cat to vomit at home, save that for the vet

-If you try washing soda crystals (advice below), and your dog doesn’t vomit after one dose of crystals, do not administer more

-Inducing vomiting is really only a good option if you are more than an hour from your vet or emergency center and you know for sure what your pet ate

-Once you have induced vomiting, avoid giving any food or water for a couple of hours at least.

The safest way to induce vomiting at home is using washing soda crystals (sodium carbonate). This is not baking soda and is only something you would have around if you make your own washing powder or have hard water. Just make sure you are not using any other washing products besides washing soda (and especially not caustic soda).

Just use one small crystal for a small dog. The dose is 1cm3 per 20 kg, so you don’t need to use much. It should work within 10 mins, and don’t administer more if it doesn’t work immediately.


If the ingestion was a while ago, inducing vomiting is probably not going to help, to to the fact that it has probably already started being absorbed through digestion. In this case, if you know it is a potentially toxic dose, get your dog to the vet/emergency for treatment. If you are not sure that amount eaten just err on the side of caution and seek treatment.

Just make sure to call your vet beforehand and let them know you are on the way, so they can prepare for your arrival. They will usually recommend an overnight stay, fluids and monitoring for seizures and heart problems. Chocolate is rarely fatal when treatment is started early.

Dogs have such a wonderful sense of smell and a tendency to be very experimental with what they eat. Make sure to play it safe and keep the chocolate out of reach!

parkgate | Diet, Emergency, Health

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