Is Lace Fern poisonous to dogs and cats?

Updated 2026-09-30 · 1 sources

Based on: Pet Poison Helpline

Call a vet today

Lace Fern is poisonous to dogs and cats – call your vet today for advice if your pet has eaten any of it. Lace Fern is listed as poisonous to both dogs and cats.

  • Dogs Call a vet today
  • Cats Call a vet today

What to do right now

  1. Call your vet or the nearest emergency vet for advice.
  2. Remove what is left and move the plant out of reach.
  3. Note which plant, which part, how much and when.
  4. Take a photo or a piece of the plant with you.
  5. Keep your pet calm.

Don't

  • Do not make your pet vomit unless a vet tells you to.
  • Do not give your pet any human medicine.

Why it can be dangerous

Toxicity has not been reported in the US, but elsewhere this plant has been associated with thiamine deficiency in sheep, hemorrhagic signs in cattle and guinea pigs, and neurologic signs in horses.[1]

Scientific name
Myriopteris

What the experts say

“Toxicity has not been reported in the US, but elsewhere this plant has been associated with thiamine deficiency in sheep, hemorrhagic signs in cattle and guinea pigs, and neurologic signs in horses.”

— Pet Poison Helpline [1]
If your pet is struggling to breathe, has collapsed, is having a seizure or can't stand up: go to the nearest vet now.

Not sure how serious it is?

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Common questions

Has toxicity from Lace Fern been reported in the US?

Toxicity has not been reported in the US.[1]

What has Lace Fern been associated with elsewhere?

Elsewhere, it has been associated with thiamine deficiency in sheep, hemorrhagic signs in cattle and guinea pigs, and neurologic signs in horses.[1]

Sources

  1. Pet Poison Helpline

How this page was made: written with the help of AI from the sources below, then checked claim by claim against those sources. Urgency levels follow OkPaw’s fixed safety rules. It is guidance, not a diagnosis. How we write our pages

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