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Is Japanese Walnut toxic to cats?

Juglans ailantifolia

Toxic to cats

Yes — japanese walnut 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 Japanese walnut shares walnut hazards: moldy nuts and husks can carry tremorgenic mycotoxins (penitrem A) causing tremors and seizures in dogs, and the fatty 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; check any ingestion with a vet.

What to do if your cat ate japanese walnut

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

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

Is japanese walnut toxic to cats? — FAQ

Is japanese walnut toxic to cats?

Yes — japanese walnut 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 Japanese walnut shares walnut hazards: moldy nuts and husks can carry tremorgenic mycotoxins (penitrem A) causing tremors and seizures in dogs, and the fatty 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; check any ingestion with a vet.

What are the symptoms if a cat eats japanese walnut?

Juglans is not individually listed by the ASPCA, but Japanese walnut shares walnut hazards: moldy nuts and husks can carry tremorgenic mycotoxins (penitrem A) causing tremors and seizures in dogs, and the fatty 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; check any ingestion with a vet. 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 japanese walnut.

What should I do if my cat ate japanese walnut?

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 japanese walnut toxic to dogs too?

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

What is a cat-safe alternative to japanese walnut?

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 japanese walnut pet-safety