Experienced and professional animal trainer provide their insights in answering this question :
A. This all depends on how much and what kind of chocolate. A small piece of a snickers bar is probably no big deal, but something like bakers chocolate is a different story. Malteses are pretty small dogs so it wouldnt take much for your dog to be in trouble. You should take your dog to the vet where depending on how long ago the chocolate was consumed they can do things to help minimize the effects. Bloodwork will most likely be done to try and determine the extent of the damage. Fluid fherapy alomg with certain drugs can help your dog avoid long term damage. If recently consumed they may even induce vomiting. Like i said, rich chocolate can be very toxic, and it wouldnt take much for a small dog. Good luck

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Chocolate Is Toxic to Dogs

Chocolate contains two chemicals that are poisonous for dogs: Theobromine and caffeine. Dogs can`t metabolize theobromine and caffeine as well as we do. If your dog eats enough chocolate – and enough theobromine – they can die.

If treated early, decontamination including inducing vomiting and administering activated charcoal to prevent absorption of theobromine into the body may be all that is necessary. Treatments of activated charcoal may be repeated to reduce the continued resorption and recirculation of theobromine.
What happens if a dog eats chocolate? Chocolate contains properties that are toxic to dogs. Depending on the dog`s size and how much chocolate it ingests, a dog can experience poisoning with symptoms that range from vomiting and diarrhea to seizures and sudden death.
The sugar levels in chocolate can cause an upset stomach and diarrhea in your dog as well. One piece of chocolate should not harm your dog, but multiple pieces can harm your dog.
Dog owners often ask how much chocolate can kill a dog. While there is no right or wrong answer to this, we know dogs show symptoms of poisoning when they eat 20mg of theobromine (the toxic chemical in chocolate) for every kilogram they weigh. These symptoms become severe at 40 to 50mg per kg.
Symptoms of chocolate poisoning will usually show within six to 12 hours, but could appear within one hour. If you know your dog has eaten chocolate, act immediately and don`t wait for the signs to appear. We always recommend seeking veterinary advice if you have any concerns about the health of your pets.
Milk does not contain any theobromine-neutralizing properties, so it will not prevent your dog from getting sick if they consume chocolate. In addition, milk is high in fat and lactose, which can be difficult for dogs to digest. This can lead to upset stomach, diarrhea, and other gastrointestinal issues.
First aid for chocolate poisoning:

There is no antidote to Theobromine. In most cases of chocolate poisoning, your vet will initially make your dog vomit, wash out their stomach and then feed them activated charcoal to absorb any Theobromine left in the intestine.

Affected dogs show signs 30 minutes to 4 hours after ingesting the poison. Initially affected dogs become anxious and have an elevated body temperature. Panting is usually seen. Progressively they become worse and staggery.
Dark Chocolate: Use a scale of 1.5 ounces per 10 pounds of body weight. That`s 3 ounces for a 20 pound dog. If they`ve ingested that much or more, it`s time to call your vet. Milk Chocolate or Semi-sweet: A poisonous amount would be anything over 3.5 ounces- a standard size Hershey`s bar- for a small 10 pound dog.
In general, mild symptoms of chocolate toxicity occur when a dog consumes 20 mg of methylxanthines per kilogram of body weight. Cardiac symptoms of chocolate toxicity occur around 40 to 50 mg/kg, and seizures occur at dosages greater than 60 mg/kg.
The toxicity of chocolate for dogs is due to its theobromine content. Chocolate poisoning is very serious. Theobromine is a long lasting, very potent toxin that can cause death. This toxicity is largely unfamiliar to most people, who may not worry too much if their dog vomits after eating a large quantity of chocolate.
A small amount of chocolate will probably only give your dog an upset stomach with vomiting or diarrhoea. Treatment is required for dogs who have eaten 3.5g of dark chocolate for every kilogram they weigh and 14g of milk chocolate for every kilogram they weigh. Never consider chocolate as a reward.
Threat to pets

For milk chocolate, any ingestion of more than 0.5 ounces per pound of body weight may put dogs at risk for chocolate poisoning. Ingestions of more than 0.13 ounces per pound of dark or semi-sweet chocolate may cause poisoning.

In terms of chocolate toxicity in dogs, it`s a matter of size not breed. All dogs can be affected, but the smaller your dog is the more susceptible they are to becoming poisoned. It isn`t going to take much chocolate to make breeds like Chihuahuas, Yorkies and Maltese severely sick.
Milk is a safe treat in small quantities. A few tablespoons of cow`s milk or goat`s milk on an occasional basis can be a nice reward for your dog. But, you should probably hold off on offering your dog an entire bowl in one sitting, as it can cause unpleasant reactions, including diarrhea, vomiting, and loose stools.
There is no antidote for chocolate poisoning. Affected dogs are offered supportive treatment from the veterinarian to prevent further absorption of the poison and hasten elimination, along with symptomatic treatment. If the animal has just been observed eating chocolate, the veterinarian may choose to induce vomiting.
Yes, dogs can eat bananas. In moderation, bananas are a great low-calorie treat for dogs. They`re high in potassium, vitamins, biotin, fiber, and copper. They are low in cholesterol and sodium, but because of their high sugar content, bananas should be given as a treat, not part of your dog`s main diet.
Cheese can be given as an occasional treat in moderation, alongside a healthy diet. If your dog manages to eat a whole block or other large amount of cheese, they may vomit. Keep an eye on them, and call your vet for advice if they become unwell.
If your pet just gobbled up poison, the treatment may begin by making your pet vomit. Your veterinarian will tell you whether or not to induce vomiting based on what your pet ate. Your veterinarian will explain how to get your pet to vomit using salt water, dilute hydrogen peroxide, or Ipecac.
No. Milk is unlikely to be helpful in the vast majority of poisoning situations and can sometimes make things worse. Most pets are lactose intolerant and giving milk can cause or worsen stomach upset symptoms.
If your pet has ingested a poison, try to rinse or wipe out the mouth with a damp towel/flannel. Do not give your pet anything to eat or drink before speaking with the Animal Poisons Helpline or a vet.
Chances are good that your dog can recover easily on his own once the food poisoning is purged from their system, but if they repeatedly vomit or don`t show signs of recovery after 24 hours, you should bring your dog in to see your veterinarian.
Once in the hospital, your veterinarian may give your dog intravenous fluid, flush your dog`s stomach, give your dog activated charcoal to absorb the toxin, or perform surgery. Supportive medications may help your dog`s kidneys and liver process the poison and heal.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. Chocolate – one regular chocolate bar and two large gooie gooess. Should I make her vomit? Small 30 lb female sheltie. 14 yrs old.
ANSWER : A. Since it has been well over two hours at this point, vomiting won’t accomplish anything useful. The effects of chocolate on a pet depends on a few factors: how big the pet is, how much they ate, and how dark the chocolate is. The darker the chocolate, the higher the concentration of theobromine, the ingredient that pets are sensitive to.

Your pet should be seen by your veterinarian right away. Chocolate is a toxin that will affect your pet’s nervous system and can cause seizures and death. It depends on the size of your pet and the amount and concentration of chocolate he consumed. Make sure to take the package with you so you can let your veterinarian know what they’re dealing with. They will do an exam, bloodwork and possibly an ECG to see if the heart is having any arrhythmias.

Q. I have a yorkshire Terrier. She is about 8 pounds And She ate chocolate, about7 pieces Snack size. Can she be in danger. Please let me know???
ANSWER : A. White chocolate is not dangerous to dogs. Milk chocolate is dangerous when eaten in large amounts. Dark chocolate and cocoa powder are very dangerous and often require prompt treatment. To get a better advise you should know what type of chocolate she had and how many grams. You can check the expected problems on several on line chocolate intoxication calculators, for example http://www.sarc.com.au/chocolate-toxicity-calculator/

Q. My dog just licked chocolate off of a plate that was sitting on the floor. It was a small amount but what should I do?
ANSWER : A. I wouldn’t worry about it. Dark chocolate is more dangerous than milk chocolate, and white chocolate is the least threatening. Small amounts of chocolate won’t hurt your dog, especially if it’s milk, or white chocolate.

Read Full Q/A … : Vetinfo

Q. Which common foods are poisonous to pets?
ANSWER : A. That’s a great question. As responsible pet owners we need to be aware of food items that can be harmful to our canine or feline companions. Here are some of the most common foods proven to cause illness in our animals at home:

Chocolate: A favorite and irresistible treat amongst most humans, chocolate is considered toxic to dogs. In very small amounts it is usually not a huge issue, but with larger volumes and with darker chocolates pet owners should be concerned. Chocolate contains methylxanthine theobromine, which is similar to caffeine. Chocolate ingestion can cause vomiting, diarrhea, hyperactivity, issues with normal heartbeats, seizures, and in some severe cases, death. It is best to keep your favorite chocolate treats in a good hiding spot and out of reach of your dog or cat.

Grapes and raisins: Dogs should not consume grapes and raisins because of the risk of acute kidney failure. Most dogs experiencing grape or raisin toxicity will begin to have vomiting and/or diarrhea within 6-12 hours of ingestion. Other abnormal clinical signs include lethargy, abdominal pain, dehydration, and tremors. Kidney failure develops within 24-72 hours of the initial ingestion. There are some dogs that do not experience these devastating side effects. It is best to contact your veterinarian or veterinary emergency facility if you believe your pet has ingested grapes or raisins.

Garlic and onions: We often forget that our meals contain these two popular ingredients and will allow our furry companions a few bites or licks. Onion and garlic both can cause a type of poisoning that results in damage to red blood cells, making them more likely to rupture. They can also cause stomach upset and mouth irritation. Look for pale gums, increased breathing or drooling or any vomiting or diarrhea.

Bread dough: Unbaked bread dough is considered poisonous to our pets. The bread dough, when ingested, expands in the stomach because of the warm and moist environment. This can lead to a bloated or even twisted stomach. In addition yeast is often added to our baking products to help get bread to rise, and when this yeast is fermented it produces both carbon dioxide and alcohol. The alcohol produced can be absorbed into the bloodstream and causes dangerous drops in blood sugar, blood pressure and body temperature. Common clinical signs include vomiting or retching, distension of the stomach, weakness and collapse.

Macadamia nuts: Ingestion of these nuts are not proven to be fatal in dogs but can cause them to experience uncomfortable clinical sings, including fever, joint stiffness, vomiting, tremors and difficulty walking, especially in their hind legs. Often your pet will start to feel better after about 48 hours, but supportive veterinary care (such as pain medication) may help ease their discomfort.

Xylitol: The most common ingredient used in sugar-free gum is xylitol, which is a non-caloric sweetener. It is also found in some oral rinses, toothpastes and vitamins. Xylitol and dogs do not mix – it can cause a dangerous drop in blood sugars levels. Dogs will often display signs of disorientation, black tarry stool, tremors and seizures. If severe enough some dogs have developed liver failure. Keep your gum away from your canine companion.

Avocados: Avocados are not actually poisonous to dogs or cats but as many veterinarians can tell you the avocado pits can cause a foreign body obstruction. Avocados contain persin, which is actually toxic to the majority of pet birds. The abnormal clinical signs associated with avocado ingestion in birds include, respiratory distress, inability to perch, liver and kidney failure and sudden death.

Go forth and enjoy your favorite foods, but keep in mind which foods you should avoid sharing with your furry family members. Whenever in doubt, contact your veterinarian for healthy and safe food suggestions.

Q. Is chocolate bad for my dog?
ANSWER : A. Yes chocolate is toxic to dogs. The higher the cocoa content the more toxic it is. Therefore, less amount of 80% dark chocolate needs to be consumed compared to white chocolate before toxic signs can be appreciated.

Also, the weight of the dog is important in terms of the amounts needed to be ingested before toxic symptoms appear. Less than 1oz of milk chocolate per 1lb of bodyweight needs to be eaten to be potentially lethal and less than 0.1oz per 1lb of baking chocolate is needed to be potentially fatal. If you are unsure, you should always contact your vet or emergency vet straight after ingestion.

If your dog has eaten more than the toxic amount, vomiting needs to be induced within two hours of ingestion. Clinical signs usually occur within 6-12 hours post ingestion. Mild signs can include increased thirst, restlessness, vomiting and diarrhea. More severe signs can include hyperactivity, increased urination, muscle tremors, unbalanced/uncoordinated, seizures, increased heart rate, increased breathing, coma and death.

Q. My maltece are chocolate what do I do
ANSWER : A. This all depends on how much and what kind of chocolate. A small piece of a snickers bar is probably no big deal, but something like bakers chocolate is a different story. Malteses are pretty small dogs so it wouldnt take much for your dog to be in trouble. You should take your dog to the vet where depending on how long ago the chocolate was consumed they can do things to help minimize the effects. Bloodwork will most likely be done to try and determine the extent of the damage. Fluid fherapy alomg with certain drugs can help your dog avoid long term damage. If recently consumed they may even induce vomiting. Like i said, rich chocolate can be very toxic, and it wouldnt take much for a small dog. Good luck

Q. My dog ate 2 candy bars, a Snickers and M&Ms. Is this toxic? He is a 13.4 lbs Chorckie. He drank water and ate some carrots too
ANSWER : A. Chocolate is toxic to dogs. Dark chocolate is usually more harmful than milk chocolate products, as the cocoa content (which is the toxic part) is higher, however any chocolate product if eaten in a high enough amount can be harmful.

It is best to contact your local veterinarian or emergency clinic for care if your dog has ingested chocolate. If the ingestion was recent, your vet may recommend inducing vomiting and can give you instructions unique to your dog for care. If the ingestion was not recent, your vet may recommend bringing your dog in for care, or monitoring for signs of toxicity such as vomiting, diarrhea, lethargy, abdominal pain or changes in behavior or appetite.

Q. My dog ate 3 chocolate candy bars, she is a 88 lb Lab, what should I look for?
ANSWER : A. It depends on the type of chocolate and the amount of chocolate in the bars. The darker the chocolate the more toxic it is. I would recommend contacting your emergency vet with the percentage of cocoa and weight of chocolate to see if treatment is required. If treatment isn’t required you may still notice some vomiting and diarrhea. Any signs of increased heart rate needs immediate treatment