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Pet safety

Is Heartnut toxic to cats?

Juglans ailantifolia var. cordiformis

Toxic to cats

Yes — heartnut is toxic to cats according to the ASPCA. Keep it well away from any cat that chews plants; reactions can be significant. This classification follows the ASPCA Toxic and Non-Toxic Plant List. Juglans is not individually listed by the ASPCA, but heartnut, as a Japanese walnut, carries the same walnut hazards: moldy nuts and husks can harbour tremorgenic mycotoxins (penitrem A) causing tremors and seizures in dogs, and the oily kernels risk GI upset or pancreatitis. Juglone in hulls and roots is toxic to horses. Keep fallen nuts and husks away from pets and livestock; consult a vet on ingestion.

What to do if your cat ate heartnut

  1. Remove any plant material from your cat's mouth and move heartnut 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 heartnut to the appointment so it can be treated correctly.

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

Is heartnut toxic to cats? — FAQ

Is heartnut toxic to cats?

Yes — heartnut is toxic to cats according to the ASPCA. Keep it well away from any cat that chews plants; reactions can be significant. Juglans is not individually listed by the ASPCA, but heartnut, as a Japanese walnut, carries the same walnut hazards: moldy nuts and husks can harbour tremorgenic mycotoxins (penitrem A) causing tremors and seizures in dogs, and the oily kernels risk GI upset or pancreatitis. Juglone in hulls and roots is toxic to horses. Keep fallen nuts and husks away from pets and livestock; consult a vet on ingestion.

What are the symptoms if a cat eats heartnut?

Juglans is not individually listed by the ASPCA, but heartnut, as a Japanese walnut, carries the same walnut hazards: moldy nuts and husks can harbour tremorgenic mycotoxins (penitrem A) causing tremors and seizures in dogs, and the oily kernels risk GI upset or pancreatitis. Juglone in hulls and roots is toxic to horses. Keep fallen nuts and husks away from pets and livestock; consult a vet on ingestion. 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 heartnut.

What should I do if my cat ate heartnut?

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 heartnut toxic to dogs too?

The ASPCA classification Growli uses applies to both cats and dogs: Heartnut is toxic to dogs as well. See the full heartnut pet-safety guide for both species.

What is a cat-safe alternative to heartnut?

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 heartnut pet-safety