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My 10 kg dog licked a tiny bit of blue slug bait off the patio — is that enough to cause seizures?

Dogs · Toxicity calculator

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Yes, even a small lick can be dangerous. Metaldehyde, the toxin in slug bait, is potent and rapidly absorbed. For a 10 kg dog, a very small amount could potentially cause nervous system signs like tremors or seizures, which can start within 30 minutes. Do not wait to see if symptoms appear. Call your vet or an emergency clinic immediately and describe exactly what he licked. Keep him calm and cool while you seek help, and bring the bait packaging if you have it.

Why does metaldehyde poison so quickly?

Metaldehyde is absorbed rapidly from the stomach and hits the central nervous system, causing severe tremors and seizures that can begin within 30 minutes to 3 hours. It can also raise body temperature dangerously high.

About the dose levels
Signs are possible from roughly 10 mg/kg of metaldehyde; severe seizures above ~30 mg/kg. Pellets vary between 2% and 6%.

Signs to watch for

  • Vomiting, drooling, excessive panting
  • Muscle tremors, twitching of the face
  • Incoordination, appearing "drunk"
  • Seizures, very high body temperature
  • Collapse and breathing failure in severe cases

What to do right now

  1. Call your vet now — seizures can start quickly and are hard to control at home.
  2. Do not try to make the dog vomit if it is already twitching or seizing.
  3. Bring the bait packaging to confirm the metaldehyde percentage.
  4. Keep the dog cool and calm on the way to the vet.
If your pet shows any of the signs above, go to the nearest emergency vet now and call ahead.

For a dose worked out against your pet's weight, use the Slug Bait (Metaldehyde) Toxicity Calculator.

Open the full calculator: Slug Bait (Metaldehyde) Toxicity Calculator →