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5 toxic foods in dogs

To save you from having to call the emergency vets, our vet presents five common foods that, although part of our diet, are toxic to dogs. We'll discuss the potential effects of ingestion, why these foods are harmful and what to do if your dog accidentally eats one of them.

Our aim is to inform you and give you the knowledge you need to avoid emergency situations and, in the event of an accident, to tell you what to do.

The photos in this article are generated by AI. No animals were harmed in the making of this article.

  1. Avocados: A healthy superfood for us, but not for our dogs!
  2. Garlic and onions: hidden dangers in our kitchens
  3. Grapes and sultanas: Small fruits, big problems
  4. Sugar-free sweets and chewing gums: The hidden evils of xylitol
  5. Chocolate: A sweet treat that turns sour
Vet Emergency London 24h/24

Avocados: A healthy superfood for us, but not for our dogs!

First on our list is the beloved avocado, revered for its benefits in the human diet. Unfortunately, if avocado is a superfood for us, it's a no-no for your dog.

Ingesting avocado can cause digestive, respiratory and cardiovascular problems in dogs. The substance in question is persin, a toxin that is highly concentrated in the skin, leaves and pit of the avocado. Although there is less persin in the flesh, it is still present and can cause intoxication in dogs, leading to vomiting, diarrhoea and possibly more serious health problems.

toxic dose of avocado in dogs

The toxic dose of avocado in dogs remains unknown at this time.

Seriousness of the poisoning

Digestive problems (vomiting, diarrhoea and salivation). Fatal poisoning if a high dose is ingested

Emergency consultation needed ?

Consult a doctor immediately after ingestion

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Garlic and onions: hidden dangers in our kitchens

Garlic and onions are two regulars in our spice cupboards and recipes. These powerful flavour enhancers, known for their culinary and health benefits, are unfortunately toxic to dogs. Ingestion of garlic or onion, whether raw or cooked, can cause significant health problems in dogs, mainly due to organo-sulphur compounds.

Even in small quantities, organo-sulphur compounds can damage a dog's red blood cells, leading to haemolytic anaemia. This can lead to symptoms such as lethargy, rapid breathing, pale gums and even collapse. It's essential to keep onions and garlic out of your dog's reach and avoid sharing human food containing these ingredients with your four-legged friend.

toxic dose of onions in dogs

Onions are toxic to dogs in quantities of 5 g/kg or more.

Seriousness of the poisoning

Digestive problems (vomiting, diarrhoea and salivation) and anaemia. Death of the dog if left untreated.

Seek urgent medical attention immediately after ingestion.

Emergency consultation is recommended as soon as the dog ingests onions or garlic.

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Sugar-free sweets and chewing gums: The hidden evils of xylitol

Many of us are trying to make healthier choices, including reducing our sugar intake. As a result, sugar-free sweets and gums have become increasingly popular. But the sweetener often used in these products, xylitol, poses a serious threat to dogs.

When ingested, xylitol can cause a sudden release of insulin in dogs, leading to life-threatening hypoglycaemia (low blood sugar). Xylitol can also cause serious liver damage. Symptoms can include vomiting, loss of coordination, seizures and even coma. It's essential to keep these products out of your dog's reach and to be aware of other household products (such as toothpaste and some brands of peanut butter) that may contain xylitol.

toxic dose of xylitol in dogs

The toxic dose of xylitol in dogs is 100 mg/kg.

Seriousness of the poisoning

Xylitol causes rapid hypoglycaemia, weakness and secondary hypothermia. Xylitol also causes severe liver damage.

Emergency consultation needed ?

Seek urgent medical attention at the first signs of symptoms.

Vet Emergency London 24h/24

Grapes and sultanas: Small fruits, big problems

Grapes and sultanas are next on the list. These small fruits may seem harmless, but eating them can lead to acute kidney failure in dogs, a condition that can be fatal if not treated immediately. Even a small amount can make a dog ill, and the severity can vary from dog to dog.

The exact toxin in grapes and sultanas that causes this toxicity is not yet known. However, their effects are well documented. Symptoms can include vomiting, diarrhoea, lethargy and loss of appetite. To be on the safe side, keep these fruits out of your dog's reach.

toxic dose of grape in dogs

Fresh grapes are toxic to dogs in quantities of 10 g/kg or more [1].

Seriousness of the poisoning

Grapes cause digestive problems (vomiting, diarrhoea) and kidney damage. The situation is serious.

Emergency consultation needed ?

Seek urgent medical attention as soon as the first symptoms appear.

Vet Emergency London 24h/24

Chocolate: A sweet treat that turns sour

Finally, we have a favourite treat for many of us: chocolate. As delicious as it is for humans, chocolate is seriously toxic for dogs. The culprits are two stimulants, theobromine and caffeine, which can cause a whole range of symptoms from gastrointestinal upsets to heart problems and neurological disorders.

Dark chocolate and baking chocolate contain the most theobromine and are therefore the most toxic. Signs of chocolate toxicity in dogs include agitation, rapid breathing, muscle tremors, convulsions and even heart failure.

Keep your chocolate stash well away from your four-legged friend and be particularly vigilant during the festive season, when chocolate consumption is high.

toxic dose of chocolate in dogs

The toxic dose of chocolate in dogs depends on the type of chocolate. Cocoa is toxic at doses of 12 mg/kg or higher.

Seriousness of the poisoning

Chocolate causes digestive symptoms in the first few hours, followed by cardio-respiratory symptoms, which can sometimes be severe. The situation is then critical.

Emergency consultation needed ?

Emergency consultation is recommended as soon as the dog ingests chocolate.

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What should I do in case of ingestion?

If your dog accidentally ingests any of the toxic foods listed above, it is essential to seek veterinary advice immediately. Time is of the essence and prompt treatment can make a significant difference to your dog's prognosis.

Don't forget that our vet emergency call centre for London is available on 033 0027 0670, nights and weekends, to answer any questions you may have about your pet's health.

In conclusion, as pet owners, it's our responsibility to look after the safety and well-being of our furry friends, especially when it comes to the food they eat. Remember, if in doubt, it's always safer to avoid sharing human food with your pets.

Remain vigilant, keep these foods out of your dog's reach, and let's ensure a happy, healthy and safe festive season for all members of our family, including our four-legged companions.

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5 toxic foods in dogs

5 toxic foods in dogs