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🐾Is It Safe?

Can my dog eat Walnuts?

🌰

Do not feed

Dangerous — black walnuts are toxic, all walnuts are a mold risk.

DANGER

Veterinary emergency

If your dog ate this, call ASPCA Poison Control: (888) 426-4435 or go to your nearest emergency vet immediately. Do not wait for symptoms.

What this means

Black walnuts are toxic to dogs and cause tremors and seizures. Regular walnuts are not directly toxic but are large, high in fat, and often develop mold (particularly Aspergillus) which produces aflatoxins — highly toxic compounds. The high fat content also triggers pancreatitis. Avoid all walnuts.

Key compound:Juglone (black walnuts), aflatoxins (mold)

Symptoms to watch for

tremorsseizuresvomitingpancreatitisaflatoxin poisoning

Note for medium dogs (20–60 lbs)

Avoid completely — mold risk and high fat make them unsafe.

Reviewed against

ASPCA Poison ControlAKC

For reference only — not a substitute for professional veterinary advice. Consult your vet if you have concerns about your dog's health.

Frequently asked questions

Can dogs eat Walnuts?▼
No, dogs should not eat Walnuts. Black walnuts are toxic to dogs and cause tremors and seizures. Regular walnuts are not directly toxic but are large, high in fat, and often develop mold (particularly Aspergillus) which produces aflatoxins — highly toxic compounds. The high fat content also triggers pancreatitis. Avoid all walnuts.
My dog ate Walnuts, what should I do?▼
Contact your veterinarian or the ASPCA Poison Control: (888) 426-4435 immediately. Do not wait for symptoms. Possible symptoms include: tremors, seizures, vomiting, pancreatitis, aflatoxin poisoning.
How much Walnuts is toxic to a dog?▼
Even small amounts of Walnuts can be harmful to dogs due to Juglone (black walnuts), aflatoxins (mold). The toxicity depends on the dog's size and how much was consumed. Contact your veterinarian immediately for guidance specific to your situation.
Is Walnuts poisonous to puppies?▼
Yes, Walnuts is especially dangerous to puppies because they are smaller and their bodies are still developing. Puppies may experience more severe symptoms than adult dogs. Contact a veterinarian immediately if a puppy consumes Walnuts.
Does my dog’s size matter when eating Walnuts?▼

Small dogs: Any walnut, especially black walnut, is dangerous for small dogs.

Medium dogs: Avoid completely — mold risk and high fat make them unsafe.

Large dogs: Still dangerous — the toxin and fat risks apply to all sizes.

Other danger foods

🍫Chocolate🍇Grapes🍇Grape🍇Raisins⚠️Xylitol

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