Is Black Walnut toxic to horses?

Yes. According to Plants4Pets, Black Walnut is toxic to horses. Dogs: moldy nuts/hulls can cause tremors and seizures, ingestion of shavings can cause incoordination; Horses: laminitis, colic Toxic principles: Unknown This entry has not been manually verified yet — treat it as guidance only.

Which pets are most at risk from Black Walnut?

Our database flags Black Walnut as toxic to: dogs, horses.

Is Black Walnut considered safe for any pets?

According to Plants4Pets, Black Walnut appears safe for: cats. Always supervise pets around plants.

What should I do if my pet eats Black Walnut?

Remove remaining plant material, do not induce vomiting unless a vet instructs you to, and seek professional help immediately with the plant name ready.

Is Black Walnut toxic to dogs, horses? (Juglans nigra)

Black Walnut (Juglans nigra) is marked as potentially toxic to dogs, horses in the Plants4Pets database. Keep this plant out of reach of curious pets and read the species-specific notes below.

Photos of Black Walnut (Juglans nigra)

Black Walnut (Juglans nigra) — plant photo, pet toxicity guide

Is Black Walnut toxic to cats, dogs or horses?

Cat Safe Not verified

Dogs: moldy nuts/hulls can cause tremors and seizures, ingestion of shavings can cause incoordination; Horses: laminitis, colic Toxic principles: Unknown
Dog Toxic Not verified

Dogs: moldy nuts/hulls can cause tremors and seizures, ingestion of shavings can cause incoordination; Horses: laminitis, colic Toxic principles: Unknown
Horse Toxic Not verified

Dogs: moldy nuts/hulls can cause tremors and seizures, ingestion of shavings can cause incoordination; Horses: laminitis, colic Toxic principles: Unknown

Community confirmations show that other users find this rating helpful. They are not verified by our team.

Black Walnut plant details and common names

Family: Juglandaceae

Safety advice if a pet eats Black Walnut

Many popular houseplants and garden species can cause vomiting, drooling, skin irritation or more serious symptoms when chewed by cats, dogs or horses. The information on this page is for educational purposes and does not replace a veterinary consultation.

If your pet has eaten any part of Black Walnut (Juglans nigra), note the amount ingested, watch for unusual behaviour and contact a veterinarian or pet poison helpline immediately.

Found outdated or incorrect data? Use the report form below or e-mail kontakt@plants4pets.pl with the plant name, species affected and your source — we review every submission.

FAQ: Black Walnut and pet toxicity

Is Black Walnut toxic to cats?: No. According to Plants4Pets, Black Walnut is safe for cats. Dogs: moldy nuts/hulls can cause tremors and seizures, ingestion of shavings can cause incoordination; Horses: laminitis, colic Toxic principles: Unknown This entry has not been manually verified yet — treat it as guidance only.
Is Black Walnut toxic to dogs?: Yes. According to Plants4Pets, Black Walnut is toxic to dogs. Dogs: moldy nuts/hulls can cause tremors and seizures, ingestion of shavings can cause incoordination; Horses: laminitis, colic Toxic principles: Unknown This entry has not been manually verified yet — treat it as guidance only.
Is Black Walnut toxic to horses?: Yes. According to Plants4Pets, Black Walnut is toxic to horses. Dogs: moldy nuts/hulls can cause tremors and seizures, ingestion of shavings can cause incoordination; Horses: laminitis, colic Toxic principles: Unknown This entry has not been manually verified yet — treat it as guidance only.
Which pets are most at risk from Black Walnut?: Our database flags Black Walnut as toxic to: dogs, horses.
Is Black Walnut considered safe for any pets?: According to Plants4Pets, Black Walnut appears safe for: cats. Always supervise pets around plants.
What should I do if my pet eats Black Walnut?: Remove remaining plant material, do not induce vomiting unless a vet instructs you to, and seek professional help immediately with the plant name ready.

Report an error or missing data

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Wrong toxicity for a cat, dog or horse
Missing or incorrect plant name
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Additional veterinary or botanical reference

Include the plant name (Juglans nigra), affected pet species and, if possible, a link to your source. We usually respond within a few business days.