Poisoning in Dogs: Recognizing, Preventing, and Acting Correctly

Poisonings are among the most common medical emergencies in dogs. Many substances that are harmless or commonplace for humans can cause serious symptoms in dogs, even in small amounts. This guide outlines the most common triggers for poisoning, describes typical signs, and provides concrete recommendations for action in an emergency.

Which substances most frequently cause poisoning in dogs?

In Switzerland, veterinarians are regularly confronted with cases of poisoning. Young or very curious dogs, who like to investigate everything – including with their mouths – are particularly at risk. The following table shows the most common triggers:

How to recognise poisoning in dogs?

The signs of poisoning vary greatly and depend heavily on the substance involved. Symptoms often begin suddenly – for example, after a walk, snacking from the table/floor, or playing in the garden.

Gastrointestinal Symptoms

• Vomiting

• Diarrhoea

• Excessive drooling

Neurological Symptoms

• Tremors

• Muscle spasms

• Balance disorders

• Apathy or unusual restlessness

Cardiovascular Symptoms

• Circulatory problems

• Shortness of breath

Other Signs

• Pale or blue gums

• Blood in urine or faeces

Important: If such symptoms occur without an identifiable cause, possible poisoning should always be considered, and a veterinarian should be consulted immediately.

Important: If you see your dog swallow something suspicious, do not wait for symptoms to appear - contact your veterinarian immediately.

Immediate measures in case of poisoning

In an emergency, every minute counts. If poisoning is suspected, it is important to act quickly and thoughtfully:

1. Contact a veterinarian or emergency clinic – even outside regular opening hours.

2. Contact Tox Info Suisse:

    - Website: toxinfo.ch

    - Phone: 145 (available 24h)

3. Do not use your own remedies. Home remedies such as milk or inducing vomiting can do more harm than good.

4. Secure the substance or evidence. Packaging, plant residues, or vomit should be kept and brought along.

Chocolate and Dogs: How dangerous is it really?

Dog owners frequently report that their dog has eaten chocolate. While chocolate consumption is not automatically an emergency, it depends on the amount and type of chocolate.

Chocolate contains theobromine, a substance that dogs can only break down very slowly. The darker the chocolate, the more theobromine it contains – and the more dangerous it is.

At what amount does chocolate become dangerous?

Milk chocolate (up to 30% cocoa content) contains up to 2.3 mg theobromine per gram.
Dark chocolate (up to 90% cocoa content) can contain up to 15 mg theobromine per gram. We have therefore based our recommendations on these maximum amounts.

Prevention: How to avoid poisoning

Many cases of poisoning can be prevented with simple measures. Food, medication, garden products (e.g., slug pellets, fertilisers, etc.), and cleaning agents should always be stored out of reach of animals. Bins should always be kept well closed. Birch sugar, xylitol-containing foods such as sugar-free chewing gum or calorie-reduced baked goods should ideally not be present in the household at all. Those with a garden or balcony should ensure they have dog-safe plants. It is important to sensitise all family members, flatmates, etc., especially if you have a dog that tends to eat everything.

During walks, it helps to observe your dog carefully – especially in urban areas or along fields where poison baits might be deliberately laid out. For dogs that pick up everything, a well-fitted muzzle can be helpful. It can also be useful to teach your dog a command to drop things from their mouth.

Conclusion

Poisoning in dogs is a serious emergency. Symptoms can vary greatly and often escalate quickly. Knowing dangerous substances, recognising typical warning signs early, and understanding how to act in an emergency can save lives. If poisoning is suspected, never hesitate – professional help from veterinarians or via the poison emergency number 145 is available at any time.

Fact sheet for download: Here we have summarised all important information compactly.

Donation Appeal:

Tox Info Suisse is a non-profit private foundation that is not profit-oriented. It is financed by contributions from public authorities and private organisations. Unfortunately, these contributions are not sufficient to sustainably finance Tox Info Suisse. Therefore, for Tox Info Suisse to continue offering its services in the future, the foundation relies on donations. Donations are used specifically for advice on poisonings. You can donate here.

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