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What Is Poisonous to Dogs and What to Do Immediately

Worried your dog has eaten something toxic? Our vets explain the most common dog poisons, the symptoms to watch for, and when you need urgent veterinary help.

Many everyday foods, plants and household products can be dangerous to dogs. If your dog has eaten something potentially toxic, contact a vet immediately - fast treatment can make a major difference.

Trusted advice from experienced UK veterinary professionals, supported by practical guidance from our full range of services.

What are the most common dog poisons?

What is poisonous to dogs?

Some of the most common dog poisons are foods people often have at home, including grapes, chocolate, garlic, onions, raisins, xylitol sweetener, rat poison and certain human medications.

Dogs can become seriously ill even from small amounts depending on their size, breed, age and overall health.

Common toxic substances for dogs include:

  • Chocolate

  • Grapes and raisins

  • Garlic and onions

  • Rat poison

  • Certain plants

  • Painkillers such as ibuprofen

  • Cleaning products

  • Antifreeze

  • Nicotine products

  • Alcohol

If you’re unsure about risks at home, our preventative health care team can help you reduce everyday hazards.

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My dog has eaten something toxic - what should I do?

What should I do if my dog has eaten poison?

Call a vet immediately. Do not wait for symptoms to appear, as some toxins take hours to show signs but may already be causing internal damage.

Immediate steps:

  • Remove any remaining substance from your dog’s reach

  • Note what was eaten and roughly how much

  • Check packaging if available

  • Do not induce vomiting unless a vet tells you to

  • Contact us or book an appointment for fast professional advice

If you need urgent help, our consultations service is designed for rapid veterinary assessment.

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What can dogs not eat?

Many human foods are unsafe for dogs. Some are mildly upsetting to the stomach, while others are life-threatening.

You can also learn more about species-specific risks on our dogs page.

Common foods toxic to dogs

  • Chocolate

  • Grapes

  • Raisins

  • Garlic

  • Onions

  • Macadamia nuts

  • Avocado

  • Artificial sweeteners (xylitol)

  • Cooked bones

  • Alcohol-based foods

For broader wellness support, see all our pet care options available.

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are garlic and grapes poisonous to dogs?

Yes. This is a common concern covered during consultations, and garlic contains compounds that can damage a dog’s red blood cells, especially in larger quantities.

Even if symptoms are not immediate, poisoning can develop over time.

Grape poisoning in dogs can cause sudden kidney failure. Some dogs react severely after eating just a few grapes or raisins.

Signs may include:

  • Vomiting

  • Lethargy

  • Loss of appetite

  • Increased thirst

  • Reduced urination

If your dog has eaten grapes, urgent veterinary assessment is recommended via booking an appointment.

Severe cases may require internal medicine support.

What are dog poisoning symptoms?

Dog poisoning symptoms vary depending on the toxin, but often include digestive, neurological or behavioural changes.

Common symptoms include:

  • Vomiting

  • Diarrhoea

  • Drooling

  • Tremors

  • Seizures

  • Collapse

  • Weakness

  • Restlessness

  • Pale gums

  • Difficulty breathing

If symptoms escalate, emergency care through consultations or imaging & diagnostics may be required.

Symptoms of dog poisoning chocolate

The most common symptoms of dog poisoning chocolate include:

  • Hyperactivity

  • Rapid heart rate

  • Vomiting

  • Trembling

  • Panting

  • Seizures in severe cases

Dark chocolate and baking chocolate are especially dangerous.

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Veterinary support for suspected poisoning

Fast veterinary guidance when every minute matters

Fab Vets helps pet owners access prompt veterinary advice for urgent concerns, including suspected poisoning.

Our support includes:

  • Rapid advice from qualified vets

  • Guidance on whether emergency treatment is needed

  • Clear next steps for monitoring or urgent care

  • Help identifying toxic foods or substances

  • Advice tailored to your dog’s age, breed and symptoms

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Can you help even if I’m not sure?

Yes. Many owners call before symptoms appear. Early advice is often the safest option.

Why choose Fab Vets?

Experienced veterinary advice you can trust

When your dog may have eaten something dangerous, generic online advice is not enough. You need clear answers quickly.

Urgent vet advice

Why pet owners choose Fab Vets:

  • UK-based veterinary professionals

  • Trusted support for urgent pet concerns

  • Clear, practical guidance without unnecessary panic

  • Fast access to professional advice

  • Focused on real-life pet emergencies, not generic articles

What makes us different?

We combine expert veterinary knowledge with practical support for everyday pet owners who need quick answers.

Concerned that your dog has eaten something toxic? Speak to a qualified vet and get clarity fast.

Frequently asked questions

  • Common household hazards include chocolate, grapes, garlic, cleaning products, medicines and rat poison.

  • Some symptoms appear within 30 minutes, while others can take several hours. Immediate advice is always safest.

  • Yes, in some cases. Grape poisoning in dogs can happen from surprisingly small amounts.

  • Garlic, raisins, xylitol and cooked bones are commonly underestimated.

  • No. If you suspect poisoning, contacting a vet quickly is the safest approach.

Get urgent advice for suspected dog poisoning

If your dog has eaten something they should not, fast advice matters. Fab Vets can help you understand the risk and what to do next.

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