Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

My 2-month-old, 1 kg kitten just nibbled one metaldehyde slug bait pellet in the garden — is this more dangerous for her because she's so small?

Cats · Toxicity calculator

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

Short answer

Yes, it is much more dangerous. Her tiny body weight means the same amount of toxin hits her system much harder and faster. Metaldehyde can cause severe tremors and seizures starting in as little as 30 minutes, and a kitten can deteriorate rapidly. Call your vet or an emergency clinic immediately — do not wait to see if symptoms appear. If you can, bring the bait package with you. Keep her warm and calm in a carrier on the way; stress can worsen neurological signs.

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 →