Back to SearchPetVitals

Black Walnuts

Danger

Contain juglone and tremorgenic mycotoxins from mold. Cause severe neurological symptoms including seizures.

Unsafe for Dogs
Unsafe for Cats

Symptoms to Watch For

Vomiting, tremors, seizures, weakness, incoordination

What to Do

EMERGENCY. Contact vet immediately. Tremorgenic mycotoxin treatment needed.

Worried about emergency vet bills?

Pet insurance can cover toxin ingestion emergencies. Plans start at $10/month.

Compare plans We may earn a commission
Tags:nuts-seedsdanger

Clinical References

  • https://www.aspca.org/pet-care/animal-poison-control
  • https://www.petpoisonhelpline.com
  • https://www.akc.org/expert-advice/nutrition/

Related Items

Macadamia NutsToxic

Macadamia nuts are toxic to dogs. The exact mechanism is unknown, but they cause neurological and muscular issues.

AlmondsCaution

Almonds are not toxic but can pose choking hazards and cause digestive issues.

WalnutsToxic

Walnuts, especially moldy ones, can contain tremorgenic mycotoxins that cause seizures.

PecansToxic

Contain juglone and can grow mold producing mycotoxins.

CashewsCaution

Safer than many nuts but high fat. Unsalted only.

PistachiosCaution

Not toxic but high fat. Shells choking hazard.

Search all 500+ items
Disclaimer: This information is for educational purposes only and is not a substitute for professional veterinary advice. If you suspect your pet has ingested something toxic, contact your veterinarian or the ASPCA Animal Poison Control Center (888-426-4435) immediately.
© 2026 PetVitals. Always consult your veterinarian.