By Dial A Vet Veterinary Team
Most poisoned dogs look completely normal for the first hour, and that window is often the only time a vet can stop the toxin being absorbed. By the time vomiting, shaking or bleeding starts, treatment shifts from prevention to damage control. If you know or suspect your dog has eaten something toxic, the safest step is to call a vet straight away, not to wait and see whether signs appear.
Key takeaways
- Many poisons cause no visible signs at first. Rat bait, grapes and some medicines can take hours to days to show effects.
- Common Australian culprits include snail bait, rat bait, chocolate, xylitol, grapes and raisins, human pain relievers, cane toads and 1080 baits in rural areas.
- Do not make your dog vomit at home unless a vet tells you to. Salt, oils and hydrogen peroxide can cause harm of their own.
- The Australian Animal Poisons Helpline (1300 869 738) and your local emergency vet can tell you whether a substance is dangerous for your dog's size.
- Bring the packet, plant or a photo with you. It saves time and guesswork.
Signs of poisoning in dogs
Signs depend heavily on what was eaten, how much, and the size of the dog. A Labrador who eats one chocolate biscuit may be fine, while a Chihuahua who finds a block of dark cooking chocolate is in real trouble. Broadly, owners tend to notice changes in a few body systems.
Gut signs
- Vomiting, sometimes repeatedly, or retching with nothing coming up
- Diarrhoea, which may contain blood
- Drooling, lip licking or pawing at the mouth
- Refusing food or seeming nauseous
Nervous system signs
- Trembling, twitching or full seizures (typical of snail bait, some mushrooms and certain insecticides)
- Wobbliness, stumbling or seeming drunk
- Agitation, restlessness and panting, or the opposite: unusual sleepiness and collapse
- Dilated pupils or unusual eye movements
Bleeding and circulation signs
- Pale gums, weakness and fast breathing (classic with anticoagulant rat bait, often three to five days after eating it)
- Bruising, nosebleeds, blood in urine or stool
- A racing heart or irregular heartbeat, as seen with chocolate and caffeine
Later signs
Some toxins damage organs quietly. Grapes, raisins and certain anti-inflammatory medicines can injure the kidneys, and xylitol can affect the liver. Increased thirst, reduced urination, yellow gums or lethargy a day or two after an exposure all need attention.
When to see a vet
Emergency now: seizures, collapse, difficulty breathing, repeated vomiting, pale gums, bleeding, or any known exposure to snail bait, rat bait, 1080, xylitol, cane toads or human medicines. Go to the nearest vet or emergency hospital and call ahead so the team can prepare.
Same day: your dog ate something you are unsure about but seems normal. Call your vet or the poisons helpline now; many exposures are only safely managed if the dog is seen within an hour or two.
Can usually wait for advice: a lick of a plant or food that a vet or the helpline has confirmed is low risk for your dog's weight. Keep watching for changes over the next 24 hours.
What to do right now
- Move your dog away from the source and remove any remaining material.
- If there is toad toxin or chemical on the mouth or coat, wipe the gums with a damp cloth from back to front, without pointing a hose down the throat, and stop touching chemicals with bare hands.
- Write down what was eaten, roughly how much, and when. Snap a photo of the label.
- Phone your vet, an emergency clinic or the Australian Animal Poisons Helpline.
- Do not give milk, oil, salt or any human medicine, and do not try to induce vomiting unless a vet instructs you.
How vets diagnose and treat poisoning
Diagnosis usually starts with your history, as there is no single blood test for "poison". Your vet will examine your dog and may run blood tests, check clotting times, assess kidney and liver values, or monitor heart rhythm.
If your dog is seen soon after eating the toxin, the vet may give an injection to make your dog vomit safely in the clinic. Activated charcoal may be used to bind some toxins in the gut. After that, treatment is supportive and specific to the toxin: intravenous fluids, medicines to control seizures or tremors, heart monitoring, and specific antidotes where they exist, such as vitamin K therapy for some rat baits. Some dogs go home the same day; others need several days in hospital. We cover individual toxins in more detail in our guides to rat poisoning in dogs and chocolate poisoning in dogs.
Prevention
- Store medicines, vitamins and sugar-free gum or lollies up high or in closed cupboards. Handbags on the floor are a common source.
- Use pet-safe snail and rodent control, or place baits where dogs cannot reach them, and remember that dogs can eat poisoned rodents too.
- Keep chocolate, grapes, raisins, macadamias and onion-heavy leftovers off benches, especially at Easter and Christmas.
- In areas with cane toads, check the yard at dusk and supervise night-time toilet trips.
- On rural properties, ask neighbours about baiting programs and keep dogs leashed where 1080 signs are posted.
FAQ
How long after eating something toxic will my dog show signs?
Anything from minutes (snail bait, cane toads) to several days (anticoagulant rat bait). A lack of signs is not proof that your dog is safe.
Should I make my dog vomit at home?
No. Home methods are unreliable and can cause serious injury. Some substances, such as caustic cleaners, do more damage on the way back up. Let a vet decide.
Is the poisons helpline free?
The Australian Animal Poisons Helpline offers phone advice on animal exposures. Your vet or emergency clinic can also advise and arrange treatment if needed.
My dog ate a plant from the garden. Is it dangerous?
It depends on the plant. Sago palms (cycads), oleander and lilies are serious concerns. Take a photo and call for advice.
Talk with a vet
If you are not sure whether something your dog ate is a problem, a Dial A Vet veterinarian can talk through the details with you and help you decide how urgently your dog needs to be seen. Start a consult with Dial A Vet. If your dog is seizing, collapsed, bleeding or struggling to breathe, go directly to an in-person emergency vet.
References
- Merck Veterinary Manual: Overview of Toxicology and Toxicities in Small Animals
- Australian Animal Poisons Helpline: Common pet poisons
- RSPCA Australia Knowledgebase: What should I do if my pet has been poisoned?
- ASPCA Animal Poison Control Center: Toxic and non-toxic plants list
- Australian Pesticides and Veterinary Medicines Authority (APVMA): Information on 1080 and rodenticides
Disclaimer: Educational only. This page does not replace an examination or advice from your own veterinarian. If you are worried about your pet right now, contact your local vet or nearest emergency animal hospital.
