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Is English Walnut 'Hartley' toxic to cats?

Juglans regia 'Hartley'

Toxic to cats

Yes — english walnut 'hartley' 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. The ASPCA lists Black Walnut (Juglans nigra), the same genus, as toxic to dogs and horses (non-toxic to cats); horses develop laminitis and colic, and moldy nuts and hulls cause tremors and seizures in dogs. English walnut shares juglone in all parts, and fallen nuts readily grow Penicillium mould producing tremorgenic mycotoxins (Penitrem A) that cause vomiting, tremors and seizures in dogs. Treat as toxic, keep dropped nuts and hulls away from pets and horses, and seek veterinary care on ingestion.

What to do if your cat ate english walnut 'hartley'

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

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

Is english walnut 'hartley' toxic to cats? — FAQ

Is english walnut 'hartley' toxic to cats?

Yes — english walnut 'hartley' is toxic to cats according to the ASPCA. Keep it well away from any cat that chews plants; reactions can be significant. The ASPCA lists Black Walnut (Juglans nigra), the same genus, as toxic to dogs and horses (non-toxic to cats); horses develop laminitis and colic, and moldy nuts and hulls cause tremors and seizures in dogs. English walnut shares juglone in all parts, and fallen nuts readily grow Penicillium mould producing tremorgenic mycotoxins (Penitrem A) that cause vomiting, tremors and seizures in dogs. Treat as toxic, keep dropped nuts and hulls away from pets and horses, and seek veterinary care on ingestion.

What are the symptoms if a cat eats english walnut 'hartley'?

The ASPCA lists Black Walnut (Juglans nigra), the same genus, as toxic to dogs and horses (non-toxic to cats); horses develop laminitis and colic, and moldy nuts and hulls cause tremors and seizures in dogs. English walnut shares juglone in all parts, and fallen nuts readily grow Penicillium mould producing tremorgenic mycotoxins (Penitrem A) that cause vomiting, tremors and seizures in dogs. Treat as toxic, keep dropped nuts and hulls away from pets and horses, and seek veterinary care 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 english walnut 'hartley'.

What should I do if my cat ate english walnut 'hartley'?

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 english walnut 'hartley' toxic to dogs too?

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

What is a cat-safe alternative to english walnut 'hartley'?

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 english walnut 'hartley' pet-safety