What happens if a dog eats Walnuts?

If a dog eats Walnuts, they may experience: Vomiting, diarrhea, tremors, seizures from mold toxins (mycotoxins), weakness.

Not Safe

Not SafeVet ReviewedReviewed by Dr Alex Crow BVetMed MRCVSnut

Not Safe for Dogs

Key warning: all parts — raw, roasted, in any form

Can Dogs Eat Walnuts? No — Black Walnuts Toxic, All High in Fat

This food is NOT safe for dogs. Keep it away from your pet.

Walnuts are not safe for dogs. Black walnuts are highly toxic and even English walnuts can cause gastrointestinal issues and are prone to mold.

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Warning Signs & Symptoms

Vomiting, diarrhea, tremors, seizures from mold toxins (mycotoxins), weakness.

If Your Dog Ate This

Call vet immediately. Black walnut ingestion is a serious emergency. Monitor for tremors and seizures.

What to Avoid

all parts — raw, roasted, in any form

Preparation & Serving

Keep all walnuts away from dogs. Black walnuts are especially toxic.

Safer Alternatives

Plain peanuts in small amounts as a safer nut alternative

Did you know?

Black walnuts produce a compound called juglone which is toxic to many plants and animals — dogs that eat fallen black walnuts from trees face the highest risk.

Portions & nutrition

Toxic dose (per kg body weight): Black walnuts — any amount can cause neurological symptoms
Calories (per 100g): 654
Safe frequency: Never

Source

Source: AKC

What You Need to Know

Walnuts are frequently contaminated with Aspergillus mold which produces tremorgenic mycotoxins. Black walnuts specifically are toxic. Not worth the risk for dogs.

Not sure what to do next? Read our emergency guide What to Do If Your Dog Eats Something Toxic

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If Your Dog Ate This — Act Now

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Frequently asked questions

Is Walnuts safe for dogs?: No, Walnuts is not safe for dogs. Walnuts are not safe for dogs. Black walnuts are highly toxic and even English walnuts can cause gastrointestinal issues and are prone to mold.
What happens if a dog eats Walnuts?: If a dog eats Walnuts, they may experience: Vomiting, diarrhea, tremors, seizures from mold toxins (mycotoxins), weakness.
How much Walnuts can a dog eat?: Walnuts are frequently contaminated with Aspergillus mold which produces tremorgenic mycotoxins. Black walnuts specifically are toxic. Not worth the risk for dogs.

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Medical Disclaimer: This information is for educational purposes only. Always consult a licensed veterinarian before making dietary changes for your pet.