Dog Eating Walnuts: Juglone Toxicity Symptoms and Prevention

Diagnosis

Vomiting, diarrhea, lethargy in puppy chewing black walnut hulls = juglone poisoning. Hulls contain highest concentration.

Prognosis

Self-limiting if exposure stops. Symptoms resolve when hulls are no longer eaten.

Prevention

• Stop using walnuts as fetch toys.
• Rake up fallen nuts/hulls promptly.
• Fence off walnut area if possible.
• Offer safe chew toys instead.

Note

Juglone affects plants more severely. Dogs usually learn aversion, but puppies explore orally.