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Is Scaly Male Fern toxic to cats?

Dryopteris affinis

Mildly toxic to cats

Mildly. The ASPCA lists scaly male fern as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. This classification follows the ASPCA Toxic and Non-Toxic Plant List. Although most true ferns are non-toxic, the genus Dryopteris (male ferns) contains filicin and related compounds in the rhizome that are historically used as a vermifuge and can be toxic if eaten in quantity. Dryopteris affinis is not on the ASPCA non-toxic list; treat as mildly toxic, keep pets and children from ingesting it, and consult a vet if eaten.

What to do if your cat ate scaly male fern

  1. Remove any plant material from your cat's mouth and move scaly male fern out of reach.
  2. Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
  3. Do not induce vomiting unless a vet or poison-control specialist instructs you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
  5. Bring a leaf or photo of scaly male fern to the appointment so it can be treated correctly.

General guidance, not veterinary advice. If you think your cat has eaten scaly male fern, contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.

Is scaly male fern toxic to cats? — FAQ

Is scaly male fern toxic to cats?

Mildly. The ASPCA lists scaly male fern as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Although most true ferns are non-toxic, the genus Dryopteris (male ferns) contains filicin and related compounds in the rhizome that are historically used as a vermifuge and can be toxic if eaten in quantity. Dryopteris affinis is not on the ASPCA non-toxic list; treat as mildly toxic, keep pets and children from ingesting it, and consult a vet if eaten.

What are the symptoms if a cat eats scaly male fern?

Although most true ferns are non-toxic, the genus Dryopteris (male ferns) contains filicin and related compounds in the rhizome that are historically used as a vermifuge and can be toxic if eaten in quantity. Dryopteris affinis is not on the ASPCA non-toxic list; treat as mildly toxic, keep pets and children from ingesting it, and consult a vet if eaten. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your cat has had access to scaly male fern.

What should I do if my cat ate scaly male fern?

Stay calm. Remove any plant from your cat's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.

Is scaly male fern toxic to dogs too?

The ASPCA classification Growli uses applies to both cats and dogs: Scaly Male Fern is mildly toxic to dogs as well. See the full scaly male fern pet-safety guide for both species.

What is a cat-safe alternative to scaly male fern?

For a similar look without the risk, see the best cats-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.

Full scaly male fern pet-safety